This paper studies the efficient agreements about the dependence of workers' earnings on employment, when the employment level is controlled by firms. Under plausible assumptions, such agreements will cause employment to diverge from efficiency as a byproduct of their attempt to mitigate risk....

The behavior of stock prices around ex-dividend days has been suggested as evidence for tax-induced clientele effects and as a means to estimate the average effective tax rate faced by investors. In this paper these possibilities are examined theoretically and empirically. Theoretically it is...

A two-period lifetime overlapping generations growth model is used to evaluate the possibility that social insurance can effectively offset economic risks associated with uncertainty about the rate of population growth. Crude measures of the seriousness of this type of risk in the current United...

In these notes I hope to touch on a variety of issues relating to public debt and social insurance and to suggest ways in which they might be approached. It is to be viewed as a research proposal, or an outline of open problems rather than as a statement of results. The notes are divided into...