International Labor Day, also known as May 1 International Labor Day and International Workers'Day or May Day, is a national holiday in more than 80 countries in the world. It is scheduled for May 1st every year. It is a festival shared by working people all over the world.

In July 1889, the Second International Congress led by Engels was held in Paris. The meeting adopted a resolution stipulating that international workers should hold a parade on May 1, 1890, and decided to designate May 1 as International Labor Day. The State Council of the Central People's Government made a decision in December 1949 to designate May 1 as Labor Day. Since 1989, the State Council has basically commended the national model workers and advanced workers every five years, with about 3,000 people at a time.

Labor Day holidays in 2019, May 1-4, 2019, a total of four days.