“firms” that elected to pay more than the minimum wage were rewarded with higher effort levels by their “workers.” This result supported the idea, initially proposed by George Akerlof, that employment contracts could be viewed partially as a gift exchange. The theory is that if the employer treats the worker well, in terms of pay and working conditions, that gift will be reciprocated with higher effort levels and lower turnover, thus making the payment of above-market wages economically profitable.

