Международная ассоциация мостовщиков и металлоконструкторов США и Канады

Trade union in the United States and Canada

The International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers is a union in the United States and Canada, which represents, trains and protects primarily construction workers, as well as shipbuilding and metal fabrication employees.

The union was formed on February 4, 1896 at a meeting in Pittsburgh, Pennsylvania with 16 delegates from the local unions in Boston, Massachusetts, Buffalo, New York, Chicago, Illinois, Cleveland, Ohio, New York City, New York, Detroit, Michigan, Philadelphia, Pennsylvania and Pittsburgh. Those locals, and others established later, often protected their own autonomy jealously, rejecting at least one national contract with the American Bridge Company because it would have reduced their power. The internal divisions also led the union, which had affiliated with the American Federation of Labor shortly after its formation, to disaffiliate in 1901, only to reaffiliate two years later. It was one of the charter members of the AFL's Building Trades Department, which was created in 1908.

Iron work is a skilled craft that dates back to the late 19th century and is a result of the rapid rise in the use of modern steel in iron bridges and skyscrapers. It was and is also an exceptionally dangerous job; hundreds of iron workers fell to their death every year in the late years of the nineteenth century. As one saying among Iron Workers of the day put it, "We're killed, but we seldom ever die."

A number of employers tried to destroy the craft unions that made up the AFL in the first decade of the twentieth century by insisting on maintaining an "open shop", i. e. hiring without reference to union membership. For craft unions, such as the Iron Workers, who maintained union wages and working conditions by controlling the supply of labor, the open shop meant that the employer was free to set any wage standards it chose and to discriminate against union members in hiring. The Iron Workers had successfully repelled the open shop demands of American Bridge Company (or "Ambridge"), an arm of the United States Steel Corporation, in 1903. In 1905, after the union's collective bargaining agreement with Ambridge had expired, Ambridge and the other members of the National Erectors Association began refusing to hire union members and hired labor spies to infiltrate the union. When the Iron Workers struck in response, the employers obtained injunctions and local ordinances that barred picketing or limited it to an ineffective display. Open shop demands still exist today. Non union iron working companies are in competition to take over union jobs, but the non union hourly wage is based on the union rate.

Between the years of 1908 and 1911, 87 to 150 bombings took place at work sites, including some bombs set up by union members. The most famous one, and the only one to cause any loss of life, killed twenty employees of the Los Angeles Times on October 1, 1910. Times publisher Harrison Gray Otis was a staunch opponent of labor unions, and the main supporter for the open shop movement in Los Angeles. Authorities arrested James B. McNamara and Ortie McManigal in Detroit, carrying dynamite in a suitcase. Both men were in positions of importance in the Ironworkers Union. McManigal confessed to a number of dynamite bombings, and named the Secretary Treasurer of the union, John J. McNamara, as the man who directed the bombings. James and Jim McNamara were brothers, and John gave James $1,000 per month from the union's treasury to finance the bombings. described the Ironworkers Union bombings as perhaps the largest domestic terrorism campaign in American history, and further notes the Los Angeles Times bombing and subsequent trials as marked a precipitous decline in labor union power in the Los Angeles area.

The Iron Workers soon found themselves at war with the AFL and, in particular, the United Brotherhood of Carpenters and Joiners of America. The Carpenters claimed that pile driving work, which was done primarily by Iron Workers in many areas, belonged to them and convinced the Building Trades Department to go along with them. When the Iron Workers refused to relinquish this work the AFL suspended it from membership in 1917. Other unions, such as the Lathers, then claimed that work that had historically been done by iron workers belonged to them instead. Unable to call on the support of other AFL unions in its fights with employers, the Iron Workers relented the following year and ceded pile driving work, with the exception of work related to bridge building, to the Carpenters. These fissures contributed to an extent to the failure of the Iron Workers' New York City strike, called in 1921 to resist the American Plan, the open shop movement that reversed much of the labor movement's gains, particularly in construction, of the previous decade. When the strike failed, the union sued the employers, also without success. The union survived, but in a much weaker state. The union also fought the Industrial Workers of the World, which had won leadership in a number of its west coast locals in the era after World War I. International President Morrin expelled some dissident locals and sued others to regain the locals' property. By 1928 the rebellion was over.

The union lost roughly half of its members in the early 1930s. While the passage of the Davis–Bacon Act required payment of the prevailing wage on federal construction projects, the desperate shortage of work allowed some employers to force their employees to pay kickbacks to them to hold on to their jobs. A number of union members hopped freight cars to go in search for work. At the same time the union's old enemy, the Carpenters union, resumed its jurisdictional war with it. Conditions improved somewhat with the advent of the New Deal and the Roosevelt administration's creation of the Works Progress Administration, a public works project that employed thousands of iron workers and other construction workers. The union was also spurred to organize, particularly in the inside fabricating shops, by the threat of competition from the newly created Congress of Industrial Organizations. The union's membership grew slowly, reaching 40,000 by 1940.