Wal-Mart may often get criticized for not paying its workers a living wage, but according to a new working paper, climbing the corporate ladder within the chain can lead to substantial income. In fact, the National Bureau of Economic Research found, Wal-Mart store managers make an average salary of $92,462 per year. The authors of the new working paper used data from career site Glassdoor and the Census Bureau’s Current Population Survey to analyze and compare average salaries of employees at some of the U.S.’s largest retail chains including Wal-Mart, Costco, Whole Foods, and Starbucks.