Weboverall, the economists found that if the minimum wage goes up by 10%, the average mcdonald's restaurant will increase worker wages by about 7%. Webreich recently authored a paper analyzing fast food workers at mcdonald’s locations in 47 us counties that raised minimum wages to $15 or more. Weboverall, the economists found that if the minimum wage goes up by 10%, the average mcdonald's restaurant will increase worker wages by about 7%. Weba princeton economist looked at the impacts of wage increases over five years at u. s. President joe biden and.