The United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union, commonly known as the United Steelworkers (USW), is a general trade union with members across North America. Headquartered in Pittsburgh, the United Steelworkers represents workers in Canada, the Caribbean, and the United States. The United Steelworkers represent workers in a diverse range of industries, including primary and fabricated metals, paper, chemicals, glass, rubber, heavy-duty conveyor belting, tires, transportation, utilities, container industries, pharmaceuticals, call centers, museums, and health care.
The United Steelworkers is currently affiliated with the AFL–CIO in the United States and the Canadian Labour Congress (CLC) in Canada as well as several international union federations. On July 2, 2008, the United Steelworkers signed an agreement to merge with the United Kingdom and Ireland–based union Unite to form a new global union entity called Workers Uniting.