The paper shows that fighting corruption with leniency programs -- reductions of the legal sanctions for wrongdoers who spontaneously report to law enforcers -- may be highly counterproductive. These programs are typically ``moderate,'' in the sense of only reducing, or at best cancelling the...

This paper presents new instrumental variables estimators for nonparametric models with discrete endogenous regressors. The model specification is sufficiently general to include structural models, triangular simultaneous equations and certain models of measurement error. One motivation of the...

We consider the portfolio delegation problem in a world with complete contingent claim markets. A principal hires an agent to manage a portfolio. When the agent has limited liability (that is, there is a lower bound on the compensation contract), she may have an incentive to take on excessive...

The ability to restrict access to distribution channels or input suppliers is commonly thought to be a barrier to entry. Many have argued that a monopolist can use vertical integration as means of foreclosing entry. We consider a duopoly market and ask whether duopolists who control access to...

This paper proposes a dynamic theory of adjustment of labor force to a shock that makes existing human capital stock obsolete. Workers will not invest in the new, superior skills because their current value depends on the existing complementary stock of human capital, and the obsolete...

No abstract.

Most workers are only partially insured against unemployment. One reason is that high unemployment compensation creates a free rider problem when monitoring of job search behavior is limited; people who do not seek employment (non-workers) may nevertheless collect unemployment compensation. We...

We test the validity of three models of intertemporal consumption choice(the permanent income hypothesis, the myopic model, and the consumption insurance model) by means of mobility indexes for the underlying consumption distribution. Each of the three models delivers different transition laws...

We develop a model of waiting lists for public hospitals when physicians deliver both private and public treatment. Public treatment is free but rationed, i.e., only cases meeting some medical criteria area admitted for treatment. Private treatment has no waiting time but entails payment of a...

The paper's theorems reverse two standard results of New Keynesian economics simply by appending endogenous investment to a benchmark imperfect competition-sticky price model. Our results are: (a) a passive interest rate rule, where the monetary authority responds to inflation by lowering the...