A Walmart (WMT) investor is lobbying fellow shareholders to take a stand against an 'unbalanced' pay program that sees CEO Doug McMillon make over 1,100 times the salary of an average store worker on an hourly wage. CtW Investment Group, an arm of the Change to Win Federation labor coalition, has sent a letter to Walmart shareholders urging them to vote against the retail giant’s executive compensation proposal at its June 5th annual meeting. McMillon’s payout amounted to 240% of his $1.2 million base pay, for instance, despite the company falling short of performance targets for 8 of the 10 measures used to determine annual cash incentive payments, says the group. Walmart defended its executive salaries and its payouts, both of which are approved by independent directors on its board’s nominating and governance committee. There are other major issues for the big-box retailer.