This paper discusses the properties of stylized U.S. (U-type) and Japanese tournaments (J-type), which can both solve the unverifiability problem of labor contracts. Under a zero-profit condition, both tournament types will yield first-best efforts if workers are homogenous and risk neutral....

"We devise an experiment to explore the effect of different degrees of competition on optimal contracts in a hidden-information context. In our benchmark case, each principal is matched with one agent of unknown type. In our second treatment, a principal can select one of three agents, while in...