Labor Day is a United States federal holiday observed on the first Monday in September (on September in ).

The holiday originated in 1882 as the Central Labor Union of New York City sought to create "a day off for the working citizens." Congress made Labor Day a federal holiday on June 28, 1894, two months after the May Day Riots of 1894. May 4 was chosen to remember the Haymarket Affair. All 50 U.S. states have additionally made Labor Day a state holiday.

Traditionally, Labor Day is celebrated by most Americans as the symbolic end of the summer.

Labor Day has been celebrated on the first Monday in September in the United States since the 1880s.Fact: date=September 2008 The form for the celebration of Labor Day was outlined in the first proposal of the holiday—a street parade to exhibit to the public "the strength and esprit de corps of the trade and labor organizations," followed by a festival for the workers and their families. This became the pattern for Labor Day celebrations. Speeches by prominent men and women were introduced later, as more emphasis was placed upon the economic and civil significance of the holiday. Still later, by a resolution of the American Federation of Labor convention of 1909, the Sunday preceding Labor Day was adopted as Labor Sunday and dedicated to the spiritual and educational aspects of the labor movement.

Today, Labor Day is often regarded as a day of rest and parades. Speeches or political demonstrations are more low-key than May 1 Labour Day celebrations in most countries, although events held by labor organizations often feature political themes and appearances by candidates for office, especially in election years. Forms of celebration include picnics, barbecues, fireworks displays, water sports, and public art events. Families with school-age children take it as the last chance to travel before the end of summer. Some teenagers and young adults view it as the last weekend for parties before returning to school. However, of late, schools have begun well before Labor Day, as early as July 24 in many urban districts, including major southern cities in the United States such as Atlanta, Miami, and Los Angeles. In addition, Labor Day marks the beginning of the NFL and college football seasons. The NCAA usually plays their first games the week before Labor Day, with the NFL traditionally playing their first game the Thursday following Labor Day.