Labor Day in the United States of America is a public holiday celebrated on the first Monday in September. It honors the American labor movement and the contributions that workers have made to the strength, prosperity, laws, and well-being of the country. It is the Monday of the long weekend known as Labor Day Weekend. It is recognized as a federal holiday.

By the time it became an official federal holiday in 1894, thirty states in the United States officially celebrated Labor Day.

–Wikipedia