Banks are closed. Are stock markets open on Labor Day? The New York Stock Exchange (NYSE). Labor Day is celebrated on the first Monday of September. It is a federal holiday, which means most banks are closed. But you may not be out Today, Labor Day is most commonly associated with the end of summer. Towns. Labor Day, September 6, September 5, September 4, September 2, September all Federal Reserve Banks and Branches will be closed the following Monday.