Labor Day is a public holiday celebrated in many countries to honor the contributions of workers and the labor movement. In the United States, it is observed on the first Monday in September and marks the unofficial end of summer. The day often features parades, picnics, and various festivities, celebrating the achievements of workers. In other countries, such as Canada and many European nations, International Workers' Day is celebrated on May 1st. This day also recognizes the struggles and rights of workers, often involving demonstrations and rallies advocating for labor rights and social justice.