The first parade was held in December 1872 and was organized by what was then the Toronto Trades and Labour Assembly and staged in support of the Toronto Typographical Union's strike for a 58-hour work-week.[2] Twenty-seven unions joined the parade to demonstrate in support of the Typographical Union who had been on strike since March 25.[2] The Toronto Trades and Labour Council (successor to the TTA) subsequently held similar celebrations every spring. On July 23, 1894, Canadian Prime Minister John Thompson's government made Labour Day an official holiday, moving it to the first Monday of September. Subsequent parades are held on the new date.
