On which date is International Workers Day celebrated worldwide?

International Workers Day is celebrated worldwide on May 1st. This day is significant because it honors the labor movement and the contributions of workers. The observance has its roots in the labor struggles of the late 19th century, particularly the Haymarket affair in Chicago in 1886, which advocated for labor rights, including the eight-hour workday.

May 1st serves as a global day of action for workers, with demonstrations and events held in many countries to promote workers' rights, celebrate labor achievements, and call for improvements in work conditions. It is distinct from other labor celebrations that may occur in different countries, such as the observed Labor Day in the United States, which is celebrated on the first Monday in September. This highlights the unique historical and cultural significance of May 1st in the global labor movement.