Labor Day is a federal holiday in the United States celebrated on the first Monday in September to honor and recognize the American labor movement and the. Labour Day is an annual holiday to celebrate the achievements of workers. Labor Day, the first Monday in September, is a creation of the labor movement and is dedicated to the social and economic achievements of American workers. Labor Day pays tribute to the contributions and achievements of American workers and is traditionally observed on the first Monday in September. Labor Day, is a legal holiday celebrated on the first Monday in September in the United States. Labor Day is a federal holiday and falls on the first Monday of September every year.