Labor Day is a federal holiday in the United States observed on the first Monday of September to celebrate the contributions and achievements of American workers. The origins of Labor Day can be traced back to the labor movement of the late 19th century, when labor activists pushed for better working conditions and fair wages. It was established as a national holiday in 1894 by President Grover Cleveland after Congress passed an act making it a federal holiday. The holiday is marked with parades, picnics, barbecues, and other events to honor the contributions of workers across various industries.