Wal-Mart Wage Hike to $15 an Hour Would Cost it $4.95 Billion, Study Says Posted by June 13, 2016 Leave a comment on Wal-Mart Wage Hike to $15 an Hour Would Cost it $4.95 Billion, Study Says The world’s largest retailer raised wages for its hourly workers to $10 per hour earlier this year, but labor groups have called the raise inadequate.