Cigar makers in Cincinnati warn there could be a strike in the fall if factory owners continue to insist that they pay 30¢ per month for gas heat provided at work during mornings and evenings - 1883
Eight-hour day demonstration in Chicago and other cities begins tradition of May Day as international labor holiday - 1886
The Cooks’ and Waiters’ Union strikes in San Francisco, demanding one day of rest per week, a 10-hour work day and a union shop for all restaurants in the city - 1901
New York City’s Empire State Building officially opens. Construction involved 3,400 workers, mostly immigrants from Europe, and hundreds of Mohawk iron workers. Five workers died during construction - 1931
Congress enacts amendments to the 1938 Fair Labor Standards Act, extending protections to the employees of state and local governments—protections which didn’t take effect until 1985 because of court challenges and regulation-writing problems - 1974
Rallies in cities across the U.S. for what organizers call “A Day Without Immigrants.” An estimated 100,000 immigrants and sympathizers gathered in San Jose, Calif., 200,000 in New York, 400,000 each in Chicago and Los Angeles. In all, there were demonstrations in at least 50 cities - 2006
Labor history courtesy Today In Labor History.