Labor Day in the United States 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 and it is considered the unofficial end of summer in the United States. The holiday is also a federal holiday. To take advantage of large numbers of potential customers with time to shop, Labor Day has become an important weekend for discounts and allowances by many retailers in the United States, especially for back-to-school sales. Some retailers claim it is one of the largest sale dates of the year, second only to the Christmas season's Black Friday.
Beginning in the late 19th century, as the trade union and labor movements grew, trade unionists proposed that a day be set aside to celebrate labor. "Labor Day" was promoted by the Central Labor Union and the Knights of Labor, which organized the first parade in New York City. In 1887, Oregon was the first state of the United States to make it an official public holiday. By the time it became an official federal holiday in 1894, thirty U.S. states officially celebrated Labor Day. Canada's Labour Day is also celebrated on the first Monday of September. More than 80 countries celebrate International Workers' Day on May 1 – the ancient European holiday of May Day – and several countries have chosen their own dates for Labour Day.
The form for the celebration of Labor Day was outlined in the first proposal for the holiday: A street parade to exhibit to the public "the strength and esprit de corps of the trade and labor organizations",[3] followed by a festival for the workers and their friends and 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 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.