December 1
The Ford Motor Co. introduced the continuous moving assembly line which could produce a complete car every two-and-a-half minutes - 1913
Kellogg cereal adopts 6-hour day - 1930
African American Rosa Parks refuses to go to the back of a Montgomery, Ala. bus, fueling the growing civil rights movement's campaign to win desegregation and end the deep South's "Jim Crow" laws - 1955
And this: December 1, 1955 - Rosa Parks, a 43-year-old African-American seamstress, boarded a crowded bus in downtown Montgomery, Alabama, for the ride home from her job in a department store. There was standing room only in the "Negro" section in the rear, but the weary Parks sat down in front and refused to give up her seat to a white man. The action caused her arrest, triggered a year-long boycott of the city bus system and led to legal actions which ended racial segregation on municipal buses throughout the southern United States

United Garment Workers of America merge with United Food & Commercial Workers International Union - 1994
Metal Polishers, Buffers, Platers & Allied Workers International Union & United Rubber, Cork, Linoleum & Plastics Workers of America merge with International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers & Helpers - 1996
Today is World AIDS Day. Find out more at www.worldaidsday.org
Labor history found here: http://www.workdayminnesota.org/index.php?history_9_12_1_2011 & here: http://www.unionist.com/big-labor/today-in-labor-history