Labor Day is a federal holiday in the United States which takes place the first Monday in September. The inception of the holiday dates back to the late 1800's when labor unions formed. It was celebrated by the government as a day to recognize the accomplishments of the American worker. Now, it signifies a day without labor where government entities and many private employers allow their workforces to take a day off with pay. As the holiday evolved, many Americans celebrate Labor Day with parties and parades; as it signifies the last day of summer and the start of a new school year.