Labor Day pays tribute to the contributions and achievements of American workers and is traditionally observed on the first Monday in September. This year? That’s September 5! It was created by the labor movement in the late 19th century and became a federal holiday in 1894. Labor Day weekend also symbolizes the end of summer for many Americans, and is celebrated with parties, street parades and athletic events. To learn more, click here. Or, just look at the coco calendar.