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workers union
A business that will not employ non-union workers is called a "closed shop".
Union
Scabs
Union.
Open Shop.
The man who started the first union for the farm workers in the US was Cesar Chavez. He started the United Farm Workers of America in 1962. It is the largest farm workers union.
Trade Union
It is a closed shop.
Labour unions
Texas was the first to attempt it in 1866.
Canal and railway workers can go by many names including, conductors, and engineers.Ê As a union, they are often part of the Teamsters Union. Ê