In the June 2012 edition of Lumens, John Roebuck provided an excellent history of this holiday. It is as follows:
Labour Day is an annual holiday to celebrate the economic and social achievements of workers. Labour Day has its origins in the labour union movement, specifically the eight-hour work day movement, which advocated eight hours for work, eight hours for recreation, and eight hours for rest.
Although similar holidays are celebrated around the world, more notably May Day in many European and Asian countries, Labour Day has been celebrated on the first Monday in September in Canada since the 1880s. The origins of Labour Day in Canada can be traced back to December 1872 when a parade was staged in support of the Toronto Typographical Union's strike for a 58-hour work-week. The Toronto Trades Assembly (TTA) called its 27 unions to demonstrate in support of the Typographical Union who had been on strike since March 25. George Brown, Canadian politician and editor of the Toronto Globe hit back at his striking employees, pressing police to charge the Typographical Union with "conspiracy." Although the laws criminalizing union activities were outdated and had already been abolished in Great Britain, they were still on the books in Canada and polive arrested 24 leaders of the Typographical Union. Labout leaders decided to call another similar demonstration on September 3 to protest the arrests. Seven unions marched in Ottawa, prompting a promise by Canadain Prime Minister Sir John A. Macdonald to repeal the "barbarous" anti-union laws. Parliament passes the Trade Union Act on June 14 the following year, and soon all unions were demanding a 54-hour work-week.
The Toronto Trades and Labour Council (successor to the TTA) held similar celebrations every spring. American Peter J. McGuire, co-founder of the American Federation of Labor, was asked to speak at a labour festival in Toronto, Canada on July 22, 1882. Returning to the United States, McGuire and the Knights of Labor organized a similar parade based on the Canadian event on September 5, 1882 in New York City, USA. On July 23, 1894, Canadian Prime Minister John Thompson and his government made Labour Day, to be held in September, an official holiday. In the United States, the New York parade became an annual event that year, and in 1894 was adopted by American president Grover Cleveland to compete with International Workers' Day (May Day).
While Labour Day parades and picnics are organized by unions, many Canadians regard Labour Day as the Monday of the last long weekend of summer. Non-union celebrations include picnics, fireworks displays, water activities, and public art events. Since the new school year generallt starts right after Labour Day, families with school-age children take it as the last chance to travel before the end of the summer.
