Governments often contract with private firms to provide public services such as health care and education. To decrease firms' incentives to selectively enroll low-cost individuals, governments frequently "risk-adjust" payments to firms based on enrollees' characteristics. We model how risk...

This expository paper describes the factors that contribute to failure of health insurance markets, and the regulatory mechanisms that have been and can be used to combat these failures. Standardized contracts and creditable coverage mandates are discussed, along with premium support, enrollment...

Regression discontinuity designs (RDDs) are a popular method to estimate treatment effects. However, RDDs may fail to yield consistent estimates if the forcing variable can be manipulated by the agent. In this paper, we examine one interesting set of economic models with such a feature....

British Master and Servant law made employee contract breach a criminal offense until 1875. We develop a contracting model generating equilibrium contract breach and prosecutions, then exploit exogenous changes in output prices to examine the effects of labor demand shocks on prosecutions....

Client relationships create value, which employees may try to wrest from their employers by setting up their own firms. If when an employer and worker establish a relationship they cannot contract on the output and profits of the worker's prospective new firm, the employer counters by inducing...

Experimental evidence to date supports the double theoretical prediction that parties transacting repeatedly punish bad contractual performance by reducing future offers, and that the threat of punishment disciplines opportunistic breach. We conduct a repeated gift-exchange experiment with...

Public-private partnerships (PPPs) are increasingly used to provide infrastructure services. Even though PPPs have the potential to increase efficiency and improve resource allocation, contract renegotiations have been pervasive.We show that existing accounting standards allow governments to...

We evaluate the asset pricing implications of a class of models in which risk sharing is imperfect because of limited enforcement of intertemporal contracts. Lustig (2004) has shown that in such a model the asset pricing kernel can be written as a simple function of the aggregate consumption...

We study theoretically and empirically how consumers in an individual private long-term health insurance market with front-loaded contracts respond to newly mandated portability requirements of their old-age provisions. To foster competition, effective 2009, German legislature made the...

Purchase obligations are forward contracts with suppliers and are used more broadly than traded commodity derivatives. This paper is the first to document that these contracts are a risk management tool and have a material impact on corporate hedging activity. Firms that expand their risk...