Labor Day 2026: When is the federal holiday, what day is it, why is it celebrated and what is the history behind the first Monday in September?

Labor Day 2026 falls on Monday, September 7. Labor Day, which falls on the first Monday of September, is widely considered the unofficial end of summer in the US. Learn when Labor Day is celebrated, why it is a federal holiday, how the Labor Day weekend became the unofficial end of summer and the history of the American labor movement behind the holiday.