This paper provides an economic rationale for overachieving behavior in non-professional activities in the labour market. The intrinsically motivated worker uses his achievement in the non-professional activity to signal his work ethic. When the worker‘s career concern is weak, he exerts no...

We analyze an oligopolistic competition with differentiated products and qualities. The quality of a product is not known to consumers. Each firm can make an imperfect disclosure of its product quality before engaging in price-signaling competition. There are two regimes for separating...

We study a monopsonist-supplier model in which each party has its own technology for production. The supplier may use its own or be required to adopt the buyer's technology. Because the efficiency of each technology is unknown to the other party, the choice of technology determines the informed...