March 17

The leadership of the American Federation of Labor selects the Carpenters union to lead the 8-hour movement. Carpenters throughout the country strike in April; by May 1, some 46,000 carpenters in 137 cities and towns have achieved shorter hours - 1890 

A U.S.-China treaty prevents Chinese laborers from entering the U.S. - 1894 

Staffers at San Francisco progressive rock station KMPX-FM strike, citing corporate control over what music is played and harassment over hair and clothing styles, among other things. The Rolling Stones, Joan Baez, the Jefferson Airplane, the Grateful Dead and other musicians request that the station not play their music as long as the station is run by strikebreakers - 1968 

Boeing Co. and the Society of Professional Engineering Employees in Aerospace (SPEEA) come to terms on a new contract, settling the largest white-collar walkout in U.S. history.  SPEEA represented some 22,000 workers, of whom 19,000 honored picket lines for 40 days - 2000