u201CThose who tell you of trade-unions bent on raising wages by moral suasion alone are like people who tell you of tigers that live on oranges.u201D ~ Henry George, 1891 
Labor unions have been defined as u201Cprivate combinations of workingmenu201D that try to increase wages and improve working conditions for members. But how? What means do labor unions use? AsHenry George suggests, trade unionists are hardly known for their kindness to strangers and genteel ways.
From colonial times trade unionists found the going difficult in North America. There was no prevailing ideology of u201Cworking class solidarityu201D and unions were far from respectable; in fact, they had a well-earned reputation for being antisocial, even criminal. Some unions were secret societies with secret oaths, and unionists engaged in intimidation, threats, vandalism and violence, especially against uncooperative workers denounced as subhuman u201Cscabsu201D and u201Cblacklegs.u201D Private property, freedom of contract, competition, and freedom of movement among occupations (slavery and indentured servitude aside) were celebrated concepts, while government-granted monopolies and cartels were not popular at the founding of the American Republic.
Courts of law were not fond of union methods either and employers, consumers and workers often resisted u201Cmilitantu201D unions. Competition from imported goods made life difficult too. Some workers were intensely anti-union, not just employers. America was an open society, a frontier society, farm-dominated, sprawling and free, and wages often were double those paid in England because labor was so scarce here. Although no reliable statistics are available, union membership probably remained below one percent of the work force most years from colonial times to the 1870s.
If a union declared and lost a strike, it usually collapsed and disappeared. Most unions failed during business downturns as jobs, union membership and revenue declined. While wage rates would fall elsewhere in response to depressed business conditions, unions stubbornly insisted on maintaining wage rates (u201Cwage rigidityu201D), intensifying their own failure. As nonunion labor became less expensive (more u201Caffordableu201D) and induced more hiring, production costs fell thereby reducing unemployment. Such wage-price flexibility shortened business downturns by expanding output and employment, thereby acting as u201Cshock absorbersu201D in the economy.
In the vast sweep of the early American economy, unions were a curiosity rather than a prominent feature, confined largely to skilled trades in big cities and on the railroads. Not until the late 1870s and prosperous 1880s when political philosophy began to shift toward collectivism and the u201Cprogressive erau201D did national trade unions gain a real foothold.
During the Middle Ages the European guild system consisted of tightly regulated local occupational and product monopolies but never really took hold in North America. A few guilds with apprenticeships existed in the major cities during the 18th century (carpenters, printing, shoemaking, tailoring, hat making) and journeymen from these guilds plus workers' u201Cbenevolent societiesu201D formed the core of early 19th century trade unions. Most labor protests, however, were spontaneous actions like that reported in 1763 when, according to the Charleston Gazette, Negro chimney sweeps u201Chad the insolence, by a combination among themselves, to raise the usual prices, and to refuse doing their work.u201D
Before 1800 printers and shoemakers organized in Philadelphia and New York. Philadelphia printers conducted the first recorded strike for higher wages in 1786, opposing a wage cut and demanding a minimum wage of $6 per week.  Employers quickly acquiesced, confirming the generalization in industrial relations that unions win short strikes and lose long ones. Because the average daily wage rate for laborers was $0.53 and $1.00 for artisans in the Philadelphia area then, it is not clear that the strike boosted wages for a majority of printers but a cut was thwarted. 
CITY OF BROTHERLY LOVE?
Philadelphia was a city of labor union firsts: first recorded labor strike, first labor newspaper, first city central body of unions, and first labor union political activity.
Trade unions in the early Republic sought monopoly control over the local supply of labor with the u201Cclosed shop,u201D an arrangement requiring employers to hire union members only. Selective admission to apprenticeships restricted membership, thereby artificially limiting the supply of skilled labor for hire and placing upward pressure on wage rates.
As in England, threats and violence accompanied strikes. The typical strike aimed to force employers to pay more than necessary for labor available on the open market while the silent corollary was that everyone union member or not must u201Cstrikeu201D too, that is, withhold his or her labor, willing or not, and refuse employment at pay less than that demanded by strikers. Alternatively, the employer must be intimidated and decisively discouraged from hiring replacement workers (u201Cstrikebreakersu201D). A union warning from the 1830s suggests how unions discouraged interlopers: u201CWe would caution all strangers and others who profess the art of horseshoeing, that if they go work for any employer under the above prices, they must abide by the consequences.u201D 
The stronger a union is, the more it acts like a private state, secure in its power with little overt need to use violence. Local culture and ideology play a large role because the response of local police, courts and politicians to union aggression is pivotal. By 1810 union tactics were fully formed: bargain u201Ccollectively,u201D demand fixed minimum pay rates, closed shops, strikes, picket lines, scab lists, strike funds, travelling cards, unity among skilled and unskilled workers, and solidarity among locals of the same trade.
But how could threatened collective violence and actual violence by adversarial-style unions square with the right of each person to seek his or her best opportunity, free of interference, to strike a bargain for lawful employment, a right firmly entrenched in custom and law? It cannot be. Union coercion is incompatible with individual freedom of contract, an ugly truth ignored by most labor writers, but as Ludwig von Mises wrote, u201CActually labor union violence is tolerated within broad limits…the authorities, with the approval of public opinion, condone such acts.u201D 
The courts struggled with the legal status of labor unions from the beginning were such combinations or labor cartels lawful or not? According to some legal doctrine, unions were u201Ccriminal conspiracies in restraint of tradeu201D and illegal combinations to fix prices (for labor services).
These issues were tested in the state courts 180642. In the famous 1806 criminal prosecution of the Philadelphia cordwainers (shoemakers), Commonwealth v. Pullis, a three-day trial led the jury to convict the accused unionists of a criminal conspiracy to fix prices and eight defendants were each fined $8, slightly more than a week's wages. Only 18 unionists were convicted on conspiracy charges when the doctrine was at its peak.  By 1842 Chief Justice Lemuel Shaw in an influential decision by the Massachusetts Supreme Judicial Court, Commonwealth v. Hunt, ruled the bootmakers' union a lawful association with a lawful right to organize and collectively withhold labor (u201Cstrikeu201D). The courts did not go so far as to authorize threats and violence by unions as legitimate u201Cweapons of laboru201D during strikes but as Mises pointed out, law enforcement was and is lax in many labor disputes. The state thereby fails in its alleged basic purpose, to protect life, property and individual liberty against (private) aggression.
Nearly everything was tried in some form or other during this era: socialism, syndicalism, anarchism, cooperatives, political unionism and the most seductive idea of all, welding everybody (but bartenders and bankers!) into one gigantic union. Some were secret societies with names like the Knights of St. Crispin, the Molly Maguires, and the Knights of Labor. Yet the main adhesive of British and European unions easily aroused class antagonisms was absent in America, and Marxist-style sentiments about the plight of the working class never became the dominant mood, contrary to some historical accounts. More often, American public opinion was horrified and disgusted by outbreaks of labor violence and union disruption of production, especially if the outbursts had revolutionary overtones.
Eventually, one form of unionism emerged as a survivor in this unfavorable environment. Experiments with political radicalism gave way to so-called u201Cbusiness unionism,u201D the notion that unions must pursue immediate, material gain for members within the free enterprise system. The underlying idea was to accept the capitalist wage, price and political system and achieve marginal gains for members within it. Consequently, the ambitions of social visionaries and leftist radicals who saw unions as a vehicle for radical change gradually fell by the wayside.
The tradition of 20th century U.S. unionism was largely the work of the American Federation of Labor (AFL) and its leader, Samuel Gompers. Founded in 1881, it was a federation of national trade unions, each composed of members of a particular craft like locomotive engineers or carpenters. Union membership in the early 1890s was barely 200,000 but as the economy expanded after the Panic of 1893, unions found more effective methods of organization and membership hit 447,000 in 1897. Given the formula for national craft unionism, unions grew to a modest share of the labor force without enormous government intervention, aside from laxity toward union threats and actual use of violence.
At the end of the 19th century, union membership in the United States was only 500,000, or less than 2% of the labor force. Only a dozen unions claimed more than 10,000 members. The largest union was the Locomotive Engineers with 30,000 members; the Cigarmakers were second with 28,300. Samuel Gompers, the most famous president of the American Federation of Labor, came from the Cigarmakers. The union disappeared in a merger with the Retail, Wholesale and Department Store Union in the 1970s. While unions existed in many trades at the close of the century, they organized a substantial share of employment in few instances, mainly construction, railroads, printing, and the postal service.
Only the railroad and postal unions were direct beneficiaries of pro-union federal legislation, although 17 state legislatures passed laws during the 1880s and 1890s prohibiting employers from firing employees for belonging to or joining unions, reflecting an emerging pro-union political climate for organized labor during this period, prelude to the u201CProgressive Era.u201D
In the early 1900s union membership rose to 6% of the labor force and 2.7 million members by 1913 and the share stayed around 67% until 1917. This was the u201CProgressive Erau201D of 19001918 which u201Cfastened a welfare-warfare state on America which has set the mold for the rest of the twentieth century…because a unique set of conditions had destroyed the Democrats as a laissez-faire party and left a power vacuum for the triumph of the new ideology of compulsory cartelization through a partnership of big government, business, unions, technocrats, and intellectuals.u201D 
WORLD WAR I
Prior to World War I, unionists were still on a relatively short leash. From 1842 onward unions had the clear legal right to exist, and workers could join such u201Cself-helpu201D organizations, but employers were under no obligation to u201Cbargainu201D with these unions. The courts also tended (ultimately) to restrict union tactics such as threats of violence, violence itself, mob action and interference with voluntary trade. Further, the courts tended to make little distinction between business and union u201Crestraints on competition.u201D They ruled, for example, that union actions in a boycott organized by the United Hatters of Danbury, CT, against the products of D.E. Loewe and Company (1908) was in restraint of trade under the Sherman Anti-Trust Act of 1890 and fined individual union members responsible for the union's acts (unions never incorporated lest they be held liable as an organization for damages they cause). Unionists therefore prominently demanded governmental privilege and mounted persistent and intensive campaigns for favorable legislation.
In 1912 Congress supplied new assistance with the Lloyd-LaFollette Act to compel collective bargaining by the post office and encourage postal union membership. In 1914 Congress passed the Clayton Act with provisions to exempt unions from the 1890 Sherman Anti-Trust Act, restrict the use of court injunctions in labor disputes, and declare picketing and similar union tactics as not unlawful. Samuel Gompers hailed the Clayton Act as labor's u201CMagna Cartau201D but subsequent court interpretations neutered the pro-union provisions.
The u201Cnational emergencyu201D of U.S. entry into World War I provided much of the experience and precedent for subsequent intervention on behalf of unionism, as well as other cartel-like policies. Historian William E. Leuchtenburg, for instance, points out, u201CThe panoply of procedures developed by the War Labor Board and the War Labor Policies Board provided the basis in later years for a series of enactments culminating in the Wagner National Labor Relations Act of 1935.u201D  Under pressure of World War I and the government's interventions, union membership skyrocketed, hitting 12% of the labor force.
The War Labor Board and the War Labor Policies Board, the latter led by Felix Frankfurter and modeled on a directive by Franklin D. Roosevelt who represented the U.S. Navy on the board, proclaimed governmental support of unions and enforced pro-union measures on industry. The boards, for instance, ordered establishment of u201Cwork councilsu201D composed of employee representatives and seized defiant enterprises.
The government even created a union, the Loyal Legion of Loggers and Lumbermen and forced lumbermen to join in its battle against the radical leftist Industrial Workers of the World (IWW, known as the u201CWobbliesu201D). The Loyal Legion collapsed after the war despite government efforts to keep it alive while others became so-called company or independent unions, subsequently banned by the 1935 Wagner Act.
Just as the War Industries Board led by Bernard M. Baruch and Army General Hugh S. Johnson was the forerunner for the 193335 cartelization under the National Industrial Recovery Act (NIRA) administered by Johnson, the War Labor Boards were forerunners to the federal labor boards used to administer Section 7(a) of NIRA and the subsequent National Labor Relations Board (NLRB) created by the National Labor Relations (Wagner) Act of 1935.
The end of the war ended pro-union interventions and by 1924 the union share of the labor force had slipped to 8% and by 1933 eroded to the same 6% as in 1903.
But peacetime help was not far off. The first durable help for u201Cprivate sectoru201D unionism was the Railway Labor Act of 1926. The labor disputes that erupted periodically on the railroads were highly visible, violent, unpopular and politically embarrassing. Although the interstate commerce clause of the U.S. Constitution, as interpreted then, restricted the ability of the national government to intervene in most economic affairs, Congress had the unchallenged power to regulate interstate commerce. A sequence of federal laws regulated railway labor matters beginning in 1888, and Congress passed the 1926 law in almost the identical form agreed on by the major railroads and unions. The act, amended in 1934, basically dictated collective bargaining for all interstate railroads and set up machinery for governmental intervention in labor disputes.
This was an obvious example of monopoly intervention on behalf of an industry. The already unionized railroads found it comfortable to impose compulsory collective bargaining on all interstate railroads, some of which had resisted union pressure better than others. The Interstate Commerce Commission (ICC), in turn, fixed freight rates for railroads based on u201Ccosts,u201D which were higher because of unions. Thus railroad wage and price determination was transferred from the marketplace to the political arena.
During the Great Depression, Congress delivered an amazing sequence of six major pieces of labor legislation favored by unionists, virtually revolutionizing labor markets: Davis-Bacon (1931), Norris-LaGuardia (1932), National Industrial Recovery Act (1933), Wagner National Labor Relations Act (1935), Walsh-Healey (1936), and the Fair Labor Standards Act (1938), popularly known as the minimum wage law. This avalanche of legislation to entrench unions was hastened by the prevailing doctrine of the 1920s, when business leaders asserted that u201Chigh and rising wages were necessary to a full flow of purchasing power and, therefore, to good businessu201D followed by its corollary that u201Creducing the income of labor is not a remedy for business depression, it is a direct and contributory cause.u201D  This ignorant blather reverses the true line of causation: high wages are an effect of high productivity and prosperity, not a cause of high productivity and prosperity. If it were otherwise, rather than producing themselves rich, all nations could simply declare all good things cheap and all wages high, thus abolishing poverty with pious hopes.
Davis-Bacon: This bill passed in 1931 following a sharp decline in construction activity at the beginning of the Great Depression. Construction expenditures went from $11 billion annually to $3 billion, with over half of the reduced activity financed by government. Competition for contracts and jobs was fierce and mobile contractors using migrant labor entered the market to underbid some local contractors. Many contractors and building trade unions welcomed the law to protect themselves from the competition of what one congressman called u201Ccarpetbagging sharpie contractors.u201D 
The law requires that workers on federally financed construction be paid wages at u201Clocal prevailing ratesu201D for comparable construction work. The clearly stated intent was to protect local workers and contractors from the competition of outsiders. The ambiguity of prevailing wages gave the U.S. Department of Labor scope to set minimum wage rates at union wages in about half of its wage determinations. This has cost taxpayers at least a billion dollars per year in higher construction and administrative costs.
Since 1931 Congress has extended the prevailing wage provision to include most federally-assisted construction, whether state, local, or national government is the direct purchaser. Additional amendments added fringe benefits to prevailing wage calculations in 1964. The effect of the Labor Department's administration of the law is not to protect local contractors from competitors but to dish out government work to high-cost contractors and the building trades unions. Davis Bacon regulates about 20% of all construction. Construction workers are among the highest paid in America, earning twice the hourly rate of employees in retail trade. Most states passed u201Clittle Davis Baconu201D Acts to further unionize the construction industry and u201Cbuild expensive.u201D
Norris-LaGuardia Anti-Injunction Act: Signed by President Herbert Hoover on March 23, 1932, this bill passed the House 36313 and the Senate 755. It was the culmination of a 50-year union campaign against u201Cgovernment by injunction.u201D
The threefold purpose of the act was to
(1) declare nonunion employment agreements (u201Cyellow-dog contractsu201D) unenforceable in federal courts (section 3);
(2) grant labor organizations immunity from liability for wrongful acts under antitrust law (sections 4 and 5); and
(3) give unions immunity from private damage suits and nullify the equity powers (injunctive relief) of federal courts in labor disputes (sections 712).
The overriding object of the act was to free organized labor from the constraints that bind businessmen and everybody else, allowing unions more scope to use their aggressive and violent tactics. The number of strikes suddenly doubled between 1932 and 1933 to 1,695 and then continued climbing to a 1930s peak of 4,740 in 1937. This outburst of strikes occurred during a period of deep depression and massive unemployment, while previous business downturns had always diminished strike activity and disappeared many unions. As Friedrich A. Hayek summed it up: u201CWe have now reached a state where [unions] have become uniquely privileged institutions to which the general rules of law do not apply.u201D 
NIRA Among the many Roosevelt interventions to boost prices and wage rates on the mistaken theory that falling wages and prices were causing the depression rather than being market-driven adjustments to re-coordinate the economy and restore production and employment, the National Industrial Recovery Act the New Deal fascist system of codes to cartelize both industry and labor markets and push up prices throughout the economy was struck down by the Supreme Court in the famous Schechter Poultry case of 1935 on the grounds that the act delegated virtually unlimited legislative power to the president. Section 7(a) of the NIRA promoted unions and the practices of collective bargaining. Congress then re-packaged similar labor regulations and new interventions piece by piece in surviving legislation like the Wagner, Walsh-Healey and Fair Labor Standards Acts.
National Labor Relations Act (NLRA), otherwise known as the Wagner Act, was a rewrite of the NIRA's section 7a. The act passed the Senate 6312 and an unrecorded voice vote in the House and Roosevelt signed it July 5, 1935.
The NLRA remains the overall labor framework in America to this day. It declares that the labor policy of the U.S. government is encouragement of the practice and procedure of collective bargaining, as well as protection of worker designation of representatives to negotiate terms and conditions of employment. It basically uses federal coercion to make it easier to unionize enterprises and employees in the private sector who otherwise would not participate in unionization and collective bargaining. The main regulatory features of the act were:
1. Creation of a politically appointed board, the National Labor Relations Board, to enforce the act, thereby escaping the too-frequent apolitical (u201Canti-unionu201D) rulings from courts of law.
2. To specify multiple u201Cunfair labor practicesu201D by enterprises to hamper their resistance to organized labor.
3. NLRB enforcement of majority elections for union representation.
4. NLRB determination of eligibility to vote.
5. NLRB enforcement of exclusive (monopoly) bargaining for all employees in a bargaining u201Cunitu201D by NLRB-certified unionists only.
6. NLRB enforcement of union pay rates for all employees represented, whether union members or not.
In April 1937, contrary to the expectations of many in the Congress who had hoped the Supreme Court would overturn their handiwork as unconstitutional as it had the NIRA, the court declared the Wagner Act constitutional by a 54 vote in the midst of Roosevelt's famous threat to pack the Court. It is no exaggeration to state that the Wagner decision marked the judiciary's general abandonment of constitutional protection against federal encroachment on economic rights and due process.
Years later, public disgust with adversarial unionism and underworld corruption produced federal legislation to modify the Wagner Act principally the Labor-Management Relations (Taft-Hartley) Act in 1947 and the Labor-Management Reporting and Disclosure (Landrum-Griffin) Act in 1959 that has been less favorable to unions but this can be exaggerated. Neither law tampered with the basic privileges and immunities previously granted to organized labor. As legal scholar Richard Epstein says, Taft-Hartley was a partial union victory because it kept the original structure of the statutes, making it more difficult to return to common law. 
My favorite section (602A) in Landrum-Griffin, although intended to rein in union officials' abuse of members' rights, highlights the immunities the state grants to unions:
u201CIt shall be unlawful to carry on picketing on or about the premises of any employer for the purpose of, or as part of any conspiracy or in furtherance of any plan or purpose for, the personal profit or enrichment of any individual (except a bona fide increase in wages or other employee benefits my italics) by taking or obtaining any money or other thing of value from such employer against his will or without his consent.u201D
The exclusion in parentheses is quite astounding: such open exceptions (privileges and immunities) for labor unions are necessary in legislation if the object of national labor law since the 1930s is to be promoted and achieved, namely, an organized labor movement freed from the regular constraints of civilization to extract money from employers against their will with the proviso that the loot be mostly paid to union members in wages and benefits.
Public Contract (Walsh-Healey) Act passed in 1936 tried to accomplish for unions more generally what Davis-Bacon did for the building trades unions but turned out to be relatively ineffective. Walsh-Healey targeted bureaucratic administration of employment conditions for all government contracts over $10,000. The law allowed the Secretary of Labor to fix minimum wage scales among nearly all businesses contracting with the government. u201CResponsibleu201D businesses that is, unionized employers generally urged that standards be imposed in order to discipline u201Cunscrupulousu201D (low-cost, nonunion) competitors, yet the Department of Labor never could settle on a consistent method of determining the u201Cprevailing wageu201D for such a bewildering array of jobs, individual skills and pay systems. Evidence that Walsh-Healey is dead for wage- and hour-fixing purposes can be seen in the fact that the act no longer excites controversy in the business community while Davis-Bacon still does.
The Fair Labor Standards Act passed Congress in 1938 and set a national minimum wage rate of 25 cents an hour. It applied to an estimated 43% of employees in private nonagricultural work and gradually grew to cover nearly 90%. State minimum wage laws cover most remaining employees. Effective July 24, 2008 the federal minimum was $6.55 per hour and becomes $7.25 per hour effective July 24, 2009, a 29-fold increase over the first minimum wage in 1938.  A 90-day beginners' minimum of $4.25 per hour applies to workers under age 20. Covered u201Cnonexemptu201D employees must be paid overtime rates of one and one-half times the regular pay rate for any hours over 40 in a 7-day period. Generally, the minimum wage has fluctuated between 35 and 50% of the average hourly wage in manufacturing.
How does the minimum wage help unions? Less than 10% of all wage and salary employees have wage rates low enough to be directly impacted by the minimum wage. Basically unions benefit by pricing competitors and potential nonunion entrants out of business. Many young people, members of minority groups like inner-city blacks, women, and older people find it more difficult to find beginners' jobs because minimum-wage and union wage rates price them out of the market. Yet accepting a low-paying job for its on-the-job training is no different in principle from paying to go to school. Economic studies show that about half of the training in the U.S. economy occurs on the job rather than in school.  Shrunken work opportunities caused by the minimum wage law have ruined uncounted careers, most visibly black teens in the ongoing tragedy of our inner cities. Milton Friedman called the minimum wage law the most antiblack law on the books.  Some antipoverty device!
World War II
In 1940 Congress passed the first peacetime draft compelling conscripts to serve in the military, a prelude to the command economy of World War II.  Of 16 million who served in the armed forces during the war, 10 million were draftees and a depression labor glut turned to a wartime shortage. Government policy shifted from promoting artificially high prices for labor services to keeping prices artificially low during wartime. A series of makeshift commissions and boards were charged with planning and coordinating economic mobilization by fixing prices and wages at below-market-clearing levels, among countless other interventions, wartime socialism in other words.
In January 1942 Roosevelt created the National War Labor Board patterned after the War Labor Board of World War I to resolve labor disputes by mediation or arbitration. The Board could and did seize plants in accord with the draft act of 1940. Also in early 1942 the President created the War Manpower Commission and by late in the war tried to make it into a powerful u201Cwork-or-fightu201D agency of compulsion but Congress never approved an economy-wide national service law.
If labor rates had been allowed to clear labor markets by rising rapidly, price-controlled businesses would be caught in a cost-price squeeze and fail financially, so Roosevelt got open-ended authority over all prices and wages that he wanted in October 1942. The War Labor Board appeased unions with security arrangements, administrative slack in its wage controls and other privileges but gained little u201Clabor peaceu201D from unions in return despite pledges to the contrary, as work stoppages rose to the worst year in 1943.
Post-World War II
Labor-Management Relations (Taft-Hartley) Act was passed by a Republican-majority Congress over President Truman's veto in 1947. More Democrats joined Republicans to vote for the bill and the override than voted against. Rather than outright repeal of the pro-union Wagner Act, Taft-Hartley unfortunately added a list of prohibited union actions, or u201Cunfair labor practices,u201D to u201Cbalanceu201D the NLRA which had previously only banned "unfairu201D labor practices for employers. The Taft-Hartley Act outlawed union practices like jurisdictional strikes, wildcat strikes, political (u201Csolidarityu201D) strikes, secondary boycotts, "common situs" picketing, closed shops, and money donations by unions to federal political campaigns. In the land of the once-free, it also required union officers to sign non-communist affidavits with the government. Union shops, which compel union membership and/or dues payments as a condition to retain a job, were restricted and states were allowed to pass u201Cright-to-worku201D laws that outlawed union shops. There are 22 states, all in the south and west, with right-to-work laws. Finally, the executive branch of the Federal government could obtain injunctions in the federal courts if an impending or current strike "imperiled the national health or safety," a test that has been interpreted generously by the courts.  President George W. Bush invoked the law most recently in connection with the employer lockout of the International Longshoremen's and Warehouse Union during negotiations with West Coast shipping and stevedoring companies in 2002.
Labor Management Reporting and Disclosure Act (or LMRDA), also known as the Landrum-Griffin Act for its sponsors Democrat Phil Landrum and Republican Robert P. Griffin regulates labor unions’ internal affairs and unions officials’ relationships with employers. Enacted in 1959 after well-publicized revelations of corruption and undemocratic practices in the Teamsters, Longshoremen's Association and United Mine Workers, the Act requires unions to hold secret elections for local union offices on a regular basis and authorizes review by the DOL of union members’ claims of improper election activity.
- Require unions to submit annual financial reports to the DOL.
- Declare that every union officer must act as a fiduciary in handling the assets and conducting the affairs of the union.
- Limit the power of unions to put subordinate bodies in trusteeship, a temporary suspension of democratic processes within a union.
- Specify minimum standards before a union may expel or take other disciplinary action against a member of the union.
- Bar members of the Communist Party and convicted felons from holding union office. 
More on Union Membership
With withdrawal of WWI federal intervention, dues-paying union members fell throughout the 1920s from a reported peak of 5 million in 1920 to fewer than 3 million by 1933. According to NBER figures, membership then turned around to more than double to 7.2 million by 1940, then nearly doubled to a staggering 13.2 million by 1945, and 14.8 million by 1950. There was no postwar slump in membership like that after World War I because the pro-union government legal framework empowering unions stayed in place.
Wartime proved its prosperity for unions. WWII government labor boards operated, on net, to advance unionization, cementing in place the union gainsoriginally created by the WWI and New Deal interventions. Between 1933 and 1945 the unionized fraction of the civilian labor force rose fourfold from 5.7% to 22.4%. That proportion eroded but stayed above 20% during the 1950s.
Since 1960, however, a sharp decline in union density has set in all western countries. According to OECD data, estimated union density in the United States was 30.9% in 1960, 22.3% in 1980, 12.8% in 2000 and 11.6% in 2007. While the overall rate of decline has recently slowed, the decline in private sector union membership has been partially concealed by union growth in the public sector.
Between 2000 and 2008, for example, BLS data show a decline in unionization among employed private wage and salary workers from 9.2 million to 8.3 million, and an erosion in union density from 9.0% to 7.6%. Private sector membership peaked at 17 million in 1970 so membership has fallen by over half since 1970. Membership among employed government wage and salary workers grew modestly from 7.1 million to 7.8 million since 2000, with a stable density of 36.9% in 2000 and 36.8% in 2008.
Union density in the private sector now is not much higher than it was in the early 1900's despite massive federal intervention on behalf of unionism since World War I. The wage-boosting success of private sector unions has gone hand in hand with their decline in membership (nothing fails like success) as the silent, steady forces of the competitive marketplace continually undermine government-sanctioned labor cartels.
Public-sector unions are on pace to claim an absolute majority of union members in a traditionally private-sector-dominated labor movement within a few years. Government jobs constitute the u201Chealthyu201D part of organized labor where external competition provides little or no discipline against union inefficiency, costs and privilege. From 900,000 union members in 1960, government membership rocketed to 4 million by 1970, nearly 6 million by 1976, 7 million by 1993 and a growth slowdown to 7.8 million by 2008.
The explanation for the sudden burst of government unionization is another intervention, namely, President John F. Kennedy's Executive Order 10988, which he signed in January 1962 to promote unionism in the federal bureaucracy. JFK had received considerable campaign support from unions and his Order 10988 declared u201Cthe efficient administration of the government and the well-being of employees requires that orderly and constructive relationships be maintained between employee organizations and management.u201D The language does not say u201Corderly relationships between employees and managersu201D but u201Cbetween employee organizations and management.u201D The Order set up procedures for determination of collective bargaining units and recognition of unions, compelled agency heads to bargain in good faith, and specified unfair labor practices for unions and management. The Order was less generous than the NLRA to unions because it prohibited strikes and established no separate NLRB-type bureaucracy but it was a beginning.
The Order triggered collective bargaining laws in states such as Michigan, New York, Washington, and Pennsylvania which had substantial private sector unionism. Only a half dozen states in the south and west are completely free of such laws promoting public sector unionism. The National Education Association (NEA), headquartered in Washington, DC (an unsurprising location), is the largest public sector labor union in the United States with 3.2 million members although it is not part of the AFL-CIO federation of unions. 
Employer or Employee Opposition?
Unions bitterly complain that uniquely American management resistance, legal as well as illegal, has thwarted employees' desire to unionize. If true, stronger government controls to hamper business opposition and allow open expression of employees' desire to unionize might reverse the decline of private sector unionism. That is the rationale for the Employee Free Choice Act (EFCA) backed by the AFL-CIO and the Obama administration this year.  The bill would amend the National Labor Relations Act to require the NLRB to certify a union as the exclusive (monopoly) bargaining agent for all employees in a u201Cunit appropriate for bargainingu201D upon a finding that a majority had signed valid authorizations designating a labor organization as their agent. This procedure, often called u201Ccard checku201D recognition, would short-circuit employer (and employee!) resistance to unionization of the business and its employees. A secret ballot election conducted by the National Labor Relations Board, which unions often lose, would no longer be required for NLRB certification and an employer would be compelled to bargain u201Cin good faithu201D with the exclusive bargaining agent even though it had failed to win a majority in a secret ballot election. How far the u201Cindustrial democracyu201D movement has come.
An EFCA law would hardly turn things around for unions, however, basically because they are a relic of the past subject to competition in the marketplace. Shifts from goods toward services, the Northeast and upper Midwest to the South and West, a trend to smaller companies, higher-tech products and more professional and technical personnel continue to erode the demand for private union membership. Further, American workers, like the general public, have a low opinion of unions and union leaders and surveys consistently show that only one in three U.S. employees would vote for union representation in a secret ballot election. Organizing drives and dramatic confrontations play a small numerical role compared to quiet reductions in the number and size of union establishments and growth in number and size of nonunion establishments. 
An Economic Conclusion
While the basic facts of labor history are well known to industrial relations specialists and labor historians, their proper interpretation is not. Most labor historians believe that what is good for unions is good for all labor. This belief underlies pro-union statist interventions in markets for labor but is entirely false, as economic reasoning and evidence prove beyond reasonable doubt.
First, when labor combinations or cartels capture monopoly control over whom employers can hire and impose higher wage rates, the number of jobs available in these companies and industries declines. This is the simple result of the law of demand: when unions raise the price of labor, employers purchase less of it. While an increase in labor productivity can partially offset higher labor cost, labor productivity cannot be raised cheaply or it would have been done already. Unions clearly are an anticompetitive force in labor markets.
Second, workers priced out of work by unions remain unemployed or obtain jobs at nonunion companies. A larger labor supply depresses wage rates there, so union wage rates come partially at the expense of lower nonunion wages.
Third, cartels flourish only where rewards are high and organizational costs low. Highly paid craft workers (known as the u201Caristocrats of laboru201D) organized historically instead of u201Cdowntrodden,u201D low-wage workers because they met two conditions:
- Union wage rates often decreased employment relatively little because demand for skilled workers was u201Cinelastic,u201D that is, employment levels were relatively u201Cinsensitiveu201D to changes in wage rates, at least in the short run.
- Craft workers also could organize at low cost because they were few in number, had a common mindset, low turnover, and few or geographically concentrated employers.
Many early economists who sympathized with unions knew unionization could succeed only if restricted to a minority of workers but they endorsed unions as a device to benefit a visible group and ignored the consequences for everybody else, especially wage earners outside the unions. These economists probably wanted to gain a hearing rather than being dismissed as u201Cmean spirited.u201D That left the field to a handful of truth-tellers like W.H. Hutt and Sylvester Petro. Ludwig von Mises set the standard for advocating the blunt truth with no bow toward labor mythology: u201CNo one has ever succeeded in the effort to demonstrate that unionism could improve the conditions and raise the standard of living of all those eager to earn wages.u201D 
Perhaps the most astounding feature revealed by this history of American unionism is that U.S. labor markets continue to work as well as they do. Despite all the union privileges and immunities granted and a never-ending stream of federal labor interventions, the famous flexibility of U.S. labor markets remains, a truly remarkable fact. And the vast majority of American workers remain stubbornly nonunion despite the best efforts of labor unions, the federal government, its court intellectuals and mass media.
Foner, Philip S. History of the Labor Movement, Volume I From Colonial Times to the Founding of the American Federation of Labor. NewYork, NY: International, 1947.
Illinois Labor History Society, A Curriculum of United States Labor History for Teachers.
Reynolds, Morgan O. Power and Privilege: Labor Unions in America. New York, NY: Universe, 1984.
———–. Making America Poorer: The Cost of Labor Law. Washington, D.C.: The Cato Institute, 1987.
———–. u201CLabor Unions.u201D The Concise Encyclopedia of Economics. http://www.econlib.org/library/Enc/LaborUnions.html
A Labor Union Chronology Colonial Times to 2009 By Morgan Reynolds
1684 New York City government suspends and discharges striking truck men
1746 Savannah carpenters strike
1763 Negro chimney sweeps in Charleston, South Carolina, institute a work stoppage to get higher prices.
1770 New York coopers convicted of conspiracy inrestraint of trade by striking for higher rates
1779 Sailors strike for higher wages in Philadelphia; troops used and some strikers jailed
1785 New York City shoemakers strike for three weeks
1786 Philadelphia printers strike successfully for a minimum wage of $6/week
1790s Labor u201Cmutual aidu201D and benevolent societies formed
1792 Philadelphia carpenters fail in strike for 10-hour day and overtime pay
1792 Shoemakers form first permanent labor union in Philadelphia
1799 First strike by a permanent union Philadelphia shoemakers in opposition to a wage cut, fails after 10 weeks
1806 In Commonwealth v. Pullis, jury convicts eight cordwainers of criminal conspiracy to raise rates, fine levied, union disbands
1819 Financial Panic, most unions pass out of existence
1823 New York City hatters convicted of conspiracy
1825 United Tailoresses of New York City conduct first all-female strike
1829 Workingmen's Party of New York formed
1820s30s Attempts to form local unions into national unions fail
1834 First attempt at a national federation, the National Trades Union, formed in New York City
1834 Factory Girls' Association at Lowell Massachusetts strikes
1837 Panic ends National Trades Union and most unions
1840 10-hour day without reduction in pay for Federal government employees
1842 Massachusetts Supreme Court rules bootmakers' union and its threatened strike are not unlawful
1842 Connecticut and Massachusetts pass laws prohibiting children from working over 10-hour days
1845 First teacher's association formed in Massachusetts
1847 New Hampshire first state to pass a 10-hour workday
1850 Delegates from 43 unions attend workingmen's convention in New York City
1857 Depression, many unions fail
1852 Typographical Union (u201Cprintersu201D) founded, become the oldest surviving trade union at its dissolution in 1986
1860 Successful strike of estimated 20,000 shoemakers in New England; Abraham Lincoln comments, u201CThank God we have a system of labor where there can be a strikeu201D
186165 Civil War, unions expand from 79 to 300
1863 Brotherhood of Locomotive Engineers founded
186686 Many local trade unions ally into dozen national unions
1867 Knights of St. Crispin founded as union open to all factory workers in shoe industry
1868 8-hour day for blue-collar federal employees
1868 First state labor bureau founded in Massachusetts
1869 Formation of Knights of Labor. Knights are ultimately superseded by American Federation of Labor (AFL), formed in 1881
1870s Strikes defeated in textiles and mines
187378 Panic of 1873; during postwar deflation national unions resist wage cuts and shrink from 30 to fewer than 10; three-quarters of membership lost
187374 Molly Maguires, a secret Irish terrorist group, scorn conventional unions and commit wave of murders; bosses come to work armed
1874 Union label first used by Cigar Makers International Union, tells customers product made by white hands
1876 Forerunner of Socialist Labor party organized
1877 Four Molly Maguires convicted and hung in Pennsylvania for murder
1877 First nationwide strike on railroads (u201CGreat Railroad Strike of 1877u201D) in opposition to wage cuts, freight trains obstructed, some state militias side with strikers, federal troops used for first time
1881 Forerunner of American Federation of Labor (AFL) formed in Pittsburgh
1881 First Labor Day celebrated in New York City
1882 Chinese Exclusion Act prohibited citizenship for Chinese immigrants, supported by union leaders, immigration controls reinforced by acts passed in 1884, 1886 and 1888
1884 Federal Bureau of Labor established within Interior Department
1885 Foran (Alien Contract Labor) Act bans employers from recruiting and paying passage for foreign workers; unions endorse limiting supply of labor, some were employed as strikebreakers
1886 May 4 Chicago Haymarket Square riot, 8 police officers killed and an unknown number of civilians, five convicted and executed, inspires May Day observances for workers
1888 First federal labor relations law applied to railroads
1890 United Mine Workers of America formed
1892 Homestead strike (Carnegie Steel) in Pennsylvania results in pitched battle between Pinkertons and strikers, 7 die, 2 dozen wounded; Pinkertons lose battle but union loses in long run as Carnegie/US Steel stays nonunion for 45 years
1893 Business panic and depression eliminates many unions again
1894 Strike against Pullman Car company led by Eugene Debs spreads to railroads, injunction defied, federal troops called out on grounds of striker interference with mail delivery, 13 strikers killed, widespread property damage
1898 Erdman Act provides mediation and arbitration for rail disputes, succeeds 1888 law
1901 U.S. Steel defeats steel union again after 3-month strike
1901 United Textile Workers founded
1902 Coal miners agree to arbitration by presidential committee to end 5-month strike
1903 U.S. Department of Commerce and Labor established
1903 Mother Jones (Mary Harris Jones) leads u201CMarch of the Mill Childrenu201D to President Theodore Roosevelt's home in New York
1905 Industrial Workers of the World (u201CWobbliesu201D) formed in Chicago
1905 In Lochner v. New York Supreme Court declares a New York maximum hours law unconstitutional
1906 Typographical Union successfully strikes for 8-hour day
1906 Upton Sinclair publishes The Jungle exposing sanitary and safety problems in Chicago meatpacking
1908 In Muller v. Oregon Supreme Court rules female maximum hours laws constitutional due to a woman's u201Cphysical structure and…maternal functionsu201D
1908 U.S. v. Adair decision declares so-called yellow dog contracts (employment agreement to not join a union) constitutional on interstate railroads, overturning the Erdman Act
1910 In the u201Ccrime of the century,u201D the downtown plant of the Los Angeles Times is bombed, killing 21. The newspaper is a powerful opponent of organized labor and leaders of the Iron Workers Union are convicted of the crime. The union had conducted a nationwide bombing campaign since 1905
1911 Gompers v. Bucks Stove and Range ruling orders AFL to cease an unlawful boycott
1912 Massachusetts enacts first minimum wage law for women and minors
1913 U.S. Department of Labor established and Secretary of Labor has power to u201Cact as a mediator and to appoint commissioners of conciliation in labor disputesu201D
1914 Clayton Act limits labor injunctions and endorses picketing and related union tactics but court nullifies in 1921
1914 In Ludlow Massacre in Colorado, day-long battle between strikers and National Guard culminates in Guard attack on tent colony of 1,200 strikers and their families, death toll is 20 including 11 children
1915 LaFollette Seamen's Act regulates seamen's working conditions
1916 Adamson Act imposes 8-hour day on railroads to avert rail strike
1916 Federal child labor law later declared unconstitutional
1917 Wartime mediation commission headed by Labor Secretary
1917 Federal government seizes railroads
1918 President Wilson establishes National War Labor Board
1919 Unions lose nationwide u201CGreat Steel Strikeu201D
1919 Labor leaders recommend labor clauses to create International Labor Organization in Versailles Treaty
1919 First police strike occurred in Boston MA but broken by then-governor Cal Coolidge, bringing him national fame
1920 Women's suffrage amendment ratified
1921 Supreme Court nullifies pro-union features of Clayton Act
1921 In Truax v. Corrigan Supreme Court strikes down Arizona law forbidding labor injunctions and permitting picketing
1921 Emergency Quota Act restricts southern and eastern European immigration
1922 In u201CHerrin Massacreu201D coal strikers in southern Illinois murder 19 strikebreakers and 2 union members
1924 Immigration (Johnson-Reed) Act limits number of immigrants to 2% of number of people from that country already living in US in 1890, aimed especially at limiting Japanese immigration
1924 William Green succeeds Samuel Gompers as AFL president
1926 Railway Labor Act enacted as drafted by interstate railroads and unions
1929 Hayes-Cooper Act restricts interstate shipment of goods produced by prison labor
1929 October stock market crash u201Cbeginsu201D Great Depression
1930 Supreme Court upholds Railway Labor Act in Texas & NOR v. Brotherhood of Railway Clerks
1930 President Hoover effectively bans immigration by decree
1931 Davis-Bacon Act
1932 Norris-LaGuardia Act
1932 Wisconsin passes first unemployment insurance program
1933 NIRA section 7(a) promotes unions and collective bargaining
1933 Frances Perkins appointed Secretary of Labor, first woman cabinet officer
1933 Wagner-Peyser establishes US Employment Service at DOL
1934 Southern mill workers walk off job in u201CGreat Uprising of '34u201D
1934 US joins ILO
1935 Supreme Court strikes down NIRA in Schechter Poultry v. US
1935 Wagner Act (NLRA) passes
1935 Committee for Industrial Organization (CIO) formed within AFL to promote industrial-style unions
1935 Social Security Act effectively coerces states into adopting unemployment benefits programs
1936 United Rubber Workers (CIO) use first large u201Csit-down strikeu201D to win recognition at Goodyear Tire
1936 United Automobile Workers use sit-down strike at GM plant
1936 Byrnes Act prohibits interstate transport of strikebreakers
1936 Walsh-Healey Public Contracts Act
1936 Railway Labor Act amended to cover airline employees
1937 NLRB v. Jones & Laughlin Steel Supreme Court finds NLRA (Wagner) Act constitutional
1937 GM and US Steel recognize unions as exclusive bargaining agents
1937 In u201CMemorial Day Massacre,u201D smaller steel producers refuse to unionize, union protesters in Chicago take to the streets, police block their path and fire on the crowd, killing 10
1937 AFL expels CIO for u201Cdual unionismu201D
1938 Fair Labor Standards Act
1938 Federal Maritime Labor Board established
1938 CIO changes name to Congress of Industrial Organizations, John L. Lewis president
1938 In NLRB v. Mackay Radio & Telegraph Supreme Court rules striking employees remain u201Cemployeesu201D
1940 In Apex Hosiery v. Leader Supreme Court rules sit-down strike actually a plant seizure by unionists few of whom were employed at the plant was not an illegal restraint of trade in interstate commerce
1941 Ford Motor Co. recognizes the UAW, signs a union shop agreement
1941 December 8 US enters WWII, long sought by FDR, and AFL and CIO announce no strike pledges and then freely violate them
1941 Executive Order 8802 or Fair Employment Act prohibits racial discrimination in defense industry
1942 National War Labor Board established, Stabilization Act gives Roosevelt the authority to u201Cstabilizeu201D wages
1943 Roosevelt issues Executive Order establishing Committee on Fair Employment Practices to eliminate u201Cemployment discriminationu201D in war industries
1943 Smith Connally (War Labor Disputes) Act authorizes plant seizures to u201Cavoid interference with the war effortu201D 
1945 WWII ends
1946 Largest wave of strikes as wartime controls relaxed
1947 Taft-Hartley Act (LMRA)
1947 US v. John L. Lewis holds that Norris-LaGuardia prohibition against labor injunctions does not apply to the federal government
1948 GM and UAW agree on first wage escalator clause based on Consumer Price Index
1948 US v. CIO holds that union advocacy that members vote for particular Congressional candidates does not violate Federal Corrupt Practices Act as amended
1949 FSLA amendment directly prohibits child labor
1949 CIO begins expelling communist-controlled unions
1950 GM and UAW agree on 5-year deal with pension plan, automatic cost-of-living wage escalators, and quasi-union-shop
1952 President Harry Truman seizes steel industry after it rejected Wage Stabilization Board recommendations, 8-week strike follows after Supreme Court declares Truman's action unconstitutional
1952 George Meany (aptly named) becomes president of AFL and Walter Reuther becomes president of CIO
1955 AFL and CIO reunite with Meany as president
1955 Ford Motor Company and UAW agree to a supplementary unemployment compensation financed by the company
1957 AFL-CIO expels Teamsters, Bakery Workers and Laundry Workers for corruption
1959 Landrum-Griffin Act (LMRDA)
1962 President John F. Kennedy issues Executive Order 10988 to promote unionism and collective bargaining in federal employment
1963 Equal Pay Act prohibits wages differences based on sex
1964 Civil Rights Act Title VII bans employment discrimination
1965 Immigrant Act eliminates national origin quotas in favor of new criteria of control
1967 Age Discrimination in Employment Act makes it illegal to hire and fire persons age 4065 based on age
1968 UAW leaves AFL-CIO to join Teamsters in new Alliance for Labor Action (ALA)
1969 DOL intervenes on behalf of minority employment in Philadelphia construction industry
1970 First nationwide postal strike
1970 Occupational Safety and Health Act (OSHA)
1973 Washington first state government to allow union shop for state employees (compulsory membership)
1974 Employee Retirement Income Security Act (ERISA) regulates and subsidizes bankrupt pension plans
1974 AFL establishes public employee department
1981 President Reagan fires striking air traffic controllers for illegal strike
1986 Immigration and Control Act
1989 Worker Adjustment and Retraining Notification (WARN) Act requires employers with 100+ employees to provide 60-day notice of plant closings and mass layoffs
1990 Immigration Act
1990 Americans with Disabilities Act (ADA) is viewed as a Civil Rights law that prohibits discrimination based on disability, defined as a u201Cphysical or mental impairment that substantially limits a major life activityu201D
1991 Civil Rights Act attempts to overturn Supreme Court restrictions on employees' job u201Crightsu201D under federal labor law
1993 Federal Family and Medical Leave Act
1994 California voters approve Proposition 187 to deny illegal immigrants access to government-subsidized schooling, social services and medical care; a federal court strikes it down as unconstitutional
2009 June 28 Ludlow Massacre site (ghost town 12 miles northwest of Trinidad CO), owned by United Mine Workers of America, dedicated as a National Historic Landmark
2009 July 24 Federal minimum wage increases from $6.55 to $7.25 per hour
2009 Employee Free Choice Act (EFCA) gathers political momentum, would substitute union u201Ccard checksu201D for NLRB secret ballot elections for a union to obtain NLRB certification as exclusive bargaining agent
 Henry George, u201CThe Condition of Labor: An Open Letter to Pope Leo XIII,u201D The Land Question (New York, NY: Rbt Schalkenbach Foundation, 1982 ), p. 77.
 U.S. Bureau of the Census, Historical Statistics of the United States, Colonial Times to 1970, Part 1, p. 163.
 Murray Rothbard, A History of Money and Banking in the United States, Auburn, AL: Mises, 2002, p. 179.
 Wm. E. Leuchtenburg, u201CThe New Deal and the Analogue of War,u201D in John Braeman, Robert H. Bremmer, and Everett Walters, eds., Change and Continuity in Twentieth Century in America, Columbus OH: Ohio State University Press, 1964, p. 87.
 Robert W. Merry, u201CThis Year's Hot Labor Issue,u201D The Wall Street Journal, 24 May 1979, p. 20.
 Richard A. Epstein, u201CA Common Law for Labor Relations: A Critique of the New Deal Labor Legislation,u201D Yale Law Journal 92 (July 1983): 1386.
 Jacob Mincer, u201COn-the-Job Training: Costs, Returns, and Some Implications,u201D Journal of Political Economy, 70 (Part 2, Supplement, October 1962), pp. 50–73; Mincer, u201CHuman capital and the labor market: A review of recent research,u201D Educational Researcher 18 (4): 27–34.
 Milton Friedman, An Economist's Protest, Sun Lakes AZ: Horton and Daughters, 1972; for more on the consequences of the minimum wage law cf. Morgan Reynolds, Economics of Labor, Cincinnati OH: Southwestern, 1995, pp. 86–95.
 The 13th amendment to the U.S. Constitution states, u201CNeither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction,u201Dyet organized labor had no problem with a military draft; instead it hysterically declared the Taft-Hartley Act a u201Cslave-labor bill.u201D
 S.G. Bronars and D.R. Deere, u201CUnion representation elections and firm profitability,u201D Industrial Relations, 29 (Winter): 15–37.
July 6, 2009