When a firm pays a wage that is higher than the market wage in order to increase worker productivity, the wage is called Naim 14:16 Economics When a firm pays a wage that is higher than the market wage in order to increase worker productivity, the wage is called A. a compensating differential. B. a minimum wage. C. an ideal wage. D. an efficiency wage. Answer: D. an efficiency wage. Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+