CVS (cvs) has the greatest disparity between CEO pay and the median wage of its employees among the 100 highest-grossing companies in the U.S., according to a study released Thursday by compensation research company PayScale, Inc. Merlo's $12.1 million salary is 422 times the size of the median wage for CVS employees: $28,700. PayScale conducted a survey to find the median pay for workers at the 100 companies and determined the CEO-to-worker pay ratio in each case.