According to the latest figures from the United Nations,1 the number of migrants throughout the world has more than doubled since 1975. At the turn of this new century it is reported to stand at around 175 million persons (including refugees), or 2.9% of the global population. Still largely from...

In a stochastic economy with overlapping generations, fiscal policy affects the allocation of aggregate risks. The paper shows how to compute the welfare effects of marginal policy changes that shift risk across cohorts, in general and for an application to social security equity investments. I...

The paper derives conditions for ex ante efficient intergenerational risk sharing in overlapping generations models. I show how the efficiency of a fiscal policy can be evaluated without distributional judgments, I derive efficiency conditions, and then examine specific models. For models with...