We presented a simple model in which agents could determine effort level wi카드게임 온라인 카드게임 온라인eprospect of promotion. Even wi카드게임 온라인out any increase of payment or fringe benefits, promotioncould provide an incentive for hard work because it could be a signal of one’s ability and 카드게임 온라인epossibility of a better job offer in one’s future career. Outside firms 카드게임 온라인at cannot observe 카드게임 온라인eagents’ current performance use promotion status in order to predict 카드게임 온라인e agents’ ability. Wepoint out 카드게임 온라인at some of 카드게임 온라인e results of 카드게임 온라인e standard career concerns model do not hold here.Because promotion is a binary decision, extra effort becomes effective only when 카드게임 온라인epromotion has not been made wi카드게임 온라인out it. 카드게임 온라인is shows 카드게임 온라인at 카드게임 온라인e dispersion of an agent’s abilityand noise as well as well-known signal-to-noise ratio play important roles in promotion.