Political contributions appear to be subject to an obvious public goods problem. Free riding might be expected to lead to polarization of contributions. We show that it is not true in general. In fact, in the most obvious model, with arbitrary number of candidates, we get a median contributor...

ex-ante appropriate (good) institutions may appear to be bad ex-post as they make economies vulnerable to shocks such as turbulence. As an example, the firing restrictions in Europe and Japan, which appear to be an inefficient institution ex-post, may have been a part of an efficient arrangement...

There are large countercyclical fluctuations in U.S. bankruptcy filings and real credit card interest rates, while unsecured credit is pro-cyclical. This paper documents the facts and asks whether the predictions of incomplete market models with bankruptcy are consistent with these facts. We...

We propose a simple model with adverse selection where delinquency, renegotiation, and bankruptcy all occur in equilibrium as a result of a simple screening mechanism. A borrower has private information about her cost of bankruptcy, and a lender may use random contracts to screen different types...

Financial innovations are a common explanation for the rise in credit card debt and bankruptcies. To evaluate this story, we develop a simple model that incorporates two key frictions: asymmetric information about borrowers’ risk of default and a fixed cost of developing each contract lenders...

We propose a parsimonious model with adverse selection where delinquency, renegotiation, and bankruptcy all occur in equilibrium as a result of a simple screening mechanism. A borrower has private information about her cost of bankruptcy, and a lender may use random contracts to screen different...

Several recent defaults on sovereign debt were accompanied by major banking crises in the defaulting countries. I argue that the banking crises, triggered by the defaults, were due to inadequate prudential regulations, which did not recognize the riskiness of the government debt. I use a simple...