The origins of International Labour Day date back to the late 19th-century labour movement in the United States. International Labour Day, also known as International Workers Day or May Day, is observed every year on May 1 to recognize the important role of workers in building and supporting our communities. Check the date, theme, history, significance and more about the International Labour Day 2025. International Workers' Day, also called Labour Day in some countries [1] and often referred to as May Day, [2][3] is a celebration of labourers and the working classes that is promoted by the international labour movement and occurs every year on 1 May, [4][5] or the first Monday in May. [6][7] Learn how Labour Day originated from the labour union movement in the 19th century and why it is celebrated on May 1 in many countries. Find out the constitutional provisions for labour rights in India and the health impact of climate change on workers.
