The Flint sit-down strike, which started on Dec. 30, 1936, represented a shift in union organizing strategies from craft unionism (organizing white male skilled workers) to industrial unionism (organizing all the workers in an industry). The sit-down strike changed the balance of power between employers and workers.

One of the most significant struggles for workers’ rights began on January 12, 1912, in Lawrence, Mass., when thousands of textile workers began a walkout that would come to be known as the Bread and Roses Strike, the Lawrence Textile Strike, and the Singing Strike. Read an overview and find teaching resources below.

The first mass work stoppage in the 195-year history of the Postal Service began on March 18, 1970, with a walkout of letter carriers in Brooklyn and Manhattan who were demanding better wages.