Banks and post offices will be closed on Monday September 2nd in observance of Labor day however most major restaurant Grocery and retail store chains will remain open on the holiday the stock market will also be closed companies such as Walmart Starbucks Chick-fil-A and Target among many others will keep their doors open on the federal holiday this year Costco is one notable exception as warehouses will be closed on Labor Day Labor Day a federal holiday celebrates the social and economic achievements of American workers and is rooted in the late 19th century when labor activists pushed for a Federal holiday to recognize the many contributions workers have made to America's strength prosperity and well-being according to the US