I saw this at Wal-MartWatch. According to a recently released Economic Policy Instiutute study, Wal-Mart "can offer better wages to its employees while keeping profit margins nearly 50 percent greater than key competitors."
The Wal-Mart debate
The benefits and costs of Wal-Mart's expansion across the United States have been hotly debated. Critics of the retailer have documented the extent to which Wal-Mart uses its market power to undermine workers' compensation, but supporters of Wal-Mart claim that the lower prices offered by the retailer more than compensate consumers for any depressing effect the company's expansion has on wages. EPI's new Issue Brief, The Wal-Mart Debate: A False Choice Between Prices and Wages, addresses how the retailer's economic benefits can be retained even if their labor compensation is dramatically improved. (News release [PDF])