Labour Day is a public holiday honouring workers and the labour movement, rooted in the eight-hour day movement that advocated for eight hours of work, recreation, and rest. In most countries, it coincides with International Workers' Day on 1 May, commemorating the 1886 Haymarket affair in Chicago—a general strike for the eight-hour workday—though the United States and Canada instead celebrate on the first Monday in September. Australia marks the day on varying dates, with the first successful march for an eight-hour day occurring in Melbourne on 21 April 1856 by stonemasons, while Queensland moved its holiday to May Day in the 1890s in solidarity with US workers. Other nations have unique traditions: The Bahamas celebrates on the first Friday in June (honouring a 1942 strike) with vibrant parades in Nassau, and Bangladesh observes May Day but also advocates for a Labour Safety Day on 24 April in memory of the 2013 Rana Plaza collapse. Ultimately, the holiday serves to celebrate workers' achievements and contributions, often featuring parades, speeches, and long weekends.