Labor Day is a United States federal holiday observed on the first Monday in September (September 6 in 2010).

The first Labor Day in the United States was celebrated on September 5, 1882 in New York City.^[1] It became a federal holiday in 1894, when, following the deaths of a number of workers at the hands of the U.S. military and U.S. Marshals during the Pullman Strike, President Grover Cleveland put reconciliation with the labor movement as a top political priority. Fearing further conflict, legislation making Labor Day a national holiday was rushed through Congress unanimously and signed into law a mere six days after the end of the strike.^[2] The September date was chosen as Cleveland was concerned that aligning an American labor holiday with existing international May Day celebrations would stir up negative emotions linked to the Haymarket Affair.^[3] All 50 U.S. states have made Labor Day a state holiday.

(... from Wikipedia on 2010-09-03 12:59:07 )