April 26
The U.S. House of Representatives passes House Joint Resolution No. 184, a constitutional amendment to prohibit the labor of persons under 18 years of age. The Senate approved by the measure a few weeks later, but it was never ratified by the states and is still technically pending - 1924
On the orders of President Roosevelt, the U.S. Army seizes the Chicago headquarters of the unionized Montgomery Ward & Co. after management defies the National Labor Relations Board - 1944
April 26, 1975 - Some 60,000 people marched in Washington, D.C., to demand jobs for all Americans. Speakers at a rally following the march included U.S. Senator Hubert Humphrey, Democrat from Minnesota. The rally ended prematurely, however, when several hundred young demonstrators, whom one organizer described as "unemployed people full of frustration and anger," charged the speaker's stand.
Labor history is taken from here:
http://www.workdayminnesota.org/index.php?history_9_04_26_2009 & here:
http://www.biglabor.com/history.php