As trade unions and the labor movement grew in the United States, trade unionists began celebrating labor on a variety of days starting in the 1880s.
There is still doubt as to who first proposed Labor Day between Matthew Maguire, machinist and secretary of the Central Labor Union of New York, and Peter McGuire, a carpenter and cofounder of the American Federation of Labor. They both claim they suggested the holiday in 1882.
In 1887, Oregon was the first state of the United States to make Labor Day an official public holiday. It wasn’t until 1894, during the Pullman Strike, that US Congress unanimously voted to approve legislation to make Labor Day a national holiday and President Grover Cleveland signed it into law six days after the end of the strike.