2. What is it?
Labour Day or Labor Day is an annual holiday to celebrate the economic and social achievements of workers. Labour Day has its origins in the labour union movement, specifically the eight-hour day movement, which advocated eight hours for work, eight hours for recreation, and eight hours for rest.

3. as celebrated?
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.

4. where  is it celebrated?
Labour Day is celebrated in many European and Asian countries on May 1. Labor Day is celebrated on the first Monday in September in the U.S. and Canada.  In many countries, May Day is synonymous with International Workers' Day, or Labour Day, which celebrates the social and economic achievements of the labour movement.

5. features
The holiday is often regarded as a day of rest and parties. Speeches or political demonstrations are more low-key than May 1 Labor 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.[6] 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 recess.

6. Fun facts
Labor Day was first observed on September 5th, The first Labor Day was celebrated in New York City. Oregon was the first state to declare Labor Day as law ,000 workers took an unpaid holiday to march in the first Labor Day parade.
Labor Day marks the beginning of the school year in most districts.