May 1st is internationally observed as May Day. It is also called the International Workers Day. The day is observed to commemorate the historic struggle of working people. The day is observed in most of the countries of the world. The day has a historical background. At present, the workers enjoy some privileges such as a minimum wages, safgety laws and eight hours workday. All these came out for the sacrifice of the workers in 1886. From the beginning of Industrial Revolution, people worked very long shifts in factories. They had to work upto fourteen or even more hours a day.This is why, in the 1880s the workers called an eight hours’ workday movement. Workers of all classes joined the movement and called for a strike. On May 3, 1886 police fired on a crowd of strikers of the McComic Harvest Machine Company, Chicago. They killed at least one striker, five or six strikers were wounded seriously and an undetermined number of strikers were injured. If the workers did not stand up and demand their rights, they would continue to be exploited. So, the day is of much importance for the working people all around the world.