3,500 immigrant miners begin Clifton-Morenci, Ariz. copper strike – 1903

An estimated 100,000 textile workers, including more than 10,000 children, strike in the Philadelphia area. Among the issues: 60-hour workweeks, including night hours, for the children - 1903

International Hod Carriers and Building Laborers' Union founded - (Late Laborers' International Union of North America) - 1903