India, Sept. 7 -- Labor Day, celebrated on the first Monday of September, honors the contributions of American workers. The federal holiday traces its origins to the labor movement of the late 19th century. The first official Labor Day celebration took place in New York City in 1882. Congress then designated it a federal holiday in 1894 under President Grover Cleveland.

Millions of Americans are observing Labor Day on Monday, September 7, marking the unofficial end of summer with barbecues and road trips. Since it is a federal holiday, federal offices and financial institutions will remain closed.

However, the majority of businesses and grocery stores will continue to operate, with some providing Labor Day deals.

Federal offices are cl...