Wesfarmers Limited is one of Australia's largest retailers and is head-quartered in Perth, Western Australia. The company was founded in 1914. Wesfarmers is also the largest private employer in Australia. In 2007, it acquired Coles Group retail business. Its diverse business operations include supermarkets, home improvements, office supplies and department stores; coal production and export; chemicals, energy and fertilisers; and industrial and safety products.