The 1940s were a pivotal decade in the history of the American labor movement. Large migrations significantly changed the composition of the industrial work force while, simultaneously, the organized labor movement sought to consolidate its base. These essays examine topics including aspects of the institutional development of the labor movement at the national level, while west coast case studies explore the conflicts generated at the workplace and in communities by the increased presence of women and minority workers. American labor historians and labor studies specialists will find this collection fills a major void in the research on American labor.