May Day is a May 1 celebration with a long and varied history, dating back millennia. Throughout the years, there have been many different events and festivities worldwide, most with the express purpose of welcoming in a change of season (spring in the Northern Hemisphere). In the 19th century, May Day took on a new meaning, as an International Workers’ Day grew out of the 19th-century movement for labor rights and an eight-hour work day in the United States.
Labour Day is an annual holiday to celebrate the achievements of workers. Labour Day has its origins in the labour union movement, specifically the eight-hour day movement, which advocated eight hours for work, eight hours for recreation, and eight hours for rest.
For most countries, Labour Day is synonymous with, or linked with, International Workers’ Day, which occurs on 1 May. For other countries, Labour Day is celebrated on a different date, often one with special significance for the labour movement in that country. Labour Day is a public holiday in many countries.