We define and explore the No-Upward-Crossing NUC, a condition satisfied by every parameterized family of distributions commonly used in economic applications. Under smoothness assumptions, NUC is equivalent to log-supermodularity of the negative of the derivative of the distribution with respect...

We solve the principal-agent problem of a monopolist insurer selling to an agent whose riskiness (loss chance) is private information, a problem introduced in Stiglitz's (1977) seminal paper. For an \emph{arbitrary} type distribution, we prove several properties of optimal menus, such as...

We analyze a principal-agent model with moral hazard in which the principal has private information about the technology, and the contract offered by her may signal this information to the agent. We characterize Perfect Bayesian Equilibria of the game that possess the following properties that...

This paper analyzes a principal-agent problem with moral hazard where a principal searches for an opportunity of uncertain return, and hires an agent to evaluate available options. The agent's effort affects the informativeness of a signal about an option's return. Based on the information...