March 20

March 20 
Michigan authorizes formation of workers’ cooperatives. Thirteen are formed in the state over a 25-year period. Labor reform organizations were advocating "cooperation" over "competitive" capitalism following the Civil War and several thousand cooperatives opened for business across the country during this era. Participants envisioned a world free from conflict where workers would receive the full value of their labor and freely exercise democratic citizenship in the political and economic realms – 1865

Fifty-eight workers are killed, 150 injured when a boiler explosion levels the R.B. Grover  shoe factory in Brockton, Mass.  The four-story wooden building collapsed and the ruins burst into flames, incinerating workers trapped in the wreckage - 1905

The American Federation of Labor issues a charter to a new Building Trades Department. Trades unions had formed a Structural Building Trades Alliance several years earlier to work out jurisdictional conflicts, but lacked the power to enforce Alliance rulings - 1908

Members of the Int’l Union of Electrical Workers reach agreement with Westinghouse Electric Corp., end a 156-day strike - 1956

The U.S. Supreme Court ruled unanimously that employers could not exclude women from jobs where exposure to toxic chemicals could potentially damage a fetus - 1991

Three hundred family farmers at a National Pork Producers Council meeting in Iowa protest factory-style hog farms - 1997