"At a time when too many Walmart workers face stagnant wages and tens of thousands still qualify for public assistance, is paying your C.E.O. 1,188 times the median employee really the best investment for Walmart?" said Randy Parraz, director of Making Change at Walmart, a labor group. "Instead of pursuing billion-dollar stock buybacks and million-dollar C.E.O. payouts, Walmart needs to make the necessary investment to eradicate poverty within and among its own work force." Walmart declined to comment.