This article is about Labour Day observances in different countries. For the workers' holiday held on 1 May.

Countries and dependencies coloured by observance of International Workers' Day or a different variant of May Day or Labour Day:
The rising death of the workforce in industries forced the working class to raise their voice for their safety. After efforts made by the workers and socialists, eight-hours was declared as the legal time for the workers in the national convention at Chicago in late 19th century by the American Federation of Labor.
The origin of Labour Day goes back to an incident in Chicago on May 4, 1886 known as the Haymarket Affair. On this day workers assembled as part of a peaceful rally in a strike demanding an eight-hour work day. An unknown person threw a dynamite bomb at the police as they acted to disperse the meeting, and the bomb blast and ensuing gunfire resulted in the deaths of seven police officers and at least four civilians; dozens of others were wounded.

Why is Labour Day celebrated?
Before a formal Labour Day came into place, deaths, injuries and dangerous working conditions were very common among the working class globally. During the rise of industrialisation, the US exploited the working class during the 19th century and made them work up to 15 hours a day under rigorous conditions.The rising death of the workforce in industries forced the working class to raise their voice for their safety. After efforts made by the workers and socialists, eight-hours was declared as the legal time for the workers in the national convention at Chicago in late 19th century by the American Federation of Labor.












