The world's biggest private employer is Walmart, a multinational retail corporation founded in 1962 by Sam Walton. Walmart is the largest company in the world by revenue and has over 2.2 million employees worldwide. It operates 11, 500 stores in 27 countries and is the largest private employer in the United States, Mexico, and Canada. Walmart is known for its low prices and wide selection of products, ranging from groceries to electronics.