This paper studies a contracting problem where agents' cost of actions is private information. With two actions, this leads to a two-dimensional screening problem with moral hazard. There is a natural one-dimensional ordering of types when there is both adverse selection and moral hazard....

In the context of common agency adverse-selection games weillustrate that the revelation principle cannot be applied to studyequilibria of the multi-principal games. We then demonstrate thatan extension of the taxation principle what we term the delegation principle can be used to characterize...

Advantageous (or propitious) selection occurs when an increase in the premium of an insurance contract induces high-cost agents to quit, thereby reducing the average cost among remaining buyers. Hemenway (1990) and many subsequent contributions motivate its advent by differences in risk-aversion...

This paper characterizes the equilibrium sets of an intrinsic common agency game with direct exter-nalities between principals both under complete and asymmetric information. Direct externalities arise when the contracting variable of one principal affects directly the other principal s payoff....

This paper studies dynamic mechanism design in the presence of moral hazard. Revelation principle extends to models with moral hazard for both full commitment and limited commitment, but I also identify environments in which the principal doesn't benefit from eliciting agents' private...

By incorporating reciprocity in an otherwise standard principal-agent model, I investigate the relation between monetary gift-exchange and incentive pay, while allowing for worker heterogeneity. I assume that some, but not all, workers care more for their principal when they are convinced that...

We study ex post information rents in sequential screening models where the agent receives private ex ante and ex post information. The principal has to pay ex post information rents for preventing the agent to coordinate lies about his ex ante and ex post information. When the agent's ex ante...

When the information used by a principal to monitor an agent is private, and thus non-verifiable by a third party, the principal has a credibility issue with the agent. The agent should be concerned that the principal could misrepresent the information in order to collect a monetary penalty from...

Riordan and Sappington (JET, 1988) show that in an agency relationship in which the agent's type is correlated with a public ex post signal, the principal may attain first best (full surplus extraction and efficient output levels) if the agent is faced with a lottery such that each type is...

We study the effects of improvements in market transparency on eBay on seller exit and continuing sellers' behavior. An improvement in market transparency by reducing strategic bias in buyer ratings led to a significant increase in buyer valuation especially of sellers rated poorly prior to the...