Inherent in the definition of Pareto efficiency is the idea that, in dynamic environments, an individual is indexed by the history of events up to his birth (rather than, as usual, the date of birth). Here, we explore the implications of this natural formulation. The set of Pareto efficient...

In this paper, we measure the potential welfare gains from counter-cyclical policy in an economy with incomplete markets. In the course of conducting this measurement, we focus on two questions as central to the determination of those potential gains: (1) what is the likely effect of...

This paper considers a model economy in which agents are privately informed about their type: their endowments of various goods and their preferences over these goods. While preference orderings over observable choices are allowed to be correlated with an agent's private type, we assume that the...

This paper provides an empirical analysis of how the U.S. Social Security and Medicare insurance system affect the labor supply of older males in the presence of incomplete markets for loans, annuities, and health insurance. Using data from the Retirement History Survey, we estimate a detailed...

Following the seminal work of Mirrlees (REStud, 1971), there has been a large amount of work on how to design an optimal tax system when agents' skills are private information. This literature makes a strong assumption: it assumes that the data generation process for skills in the economy is...