craft union, trade union combining workers who are engaged in a particular craft or skill but who may work for various employers and at various locations. Formed to improve wage levels and working conditions, craft unions were established in Britain and in the United States during the middle of the 19th century.
Craft unions derive their power from their control over the supply of skilled labor—a control that is maintained through licensing and apprenticeship arrangements. With such slogans as “One craft, one union,” a local craft union strives to organize all members of its trade (e.g., plumbers, electricians, bricklayers, ironworkers, carpenters, machinists, and printers). Some craft unions include a range of skilled workers in roles related to the original craft in which the union developed. For example, the Aircraft Mechanics Fraternal Association, which was formed in 1962 by aircraft mechanics who sought greater recognition of their craft, today represents several classifications of workers who are responsible for maintaining aircraft and aviation facilities.
See also industrial union.