Demographic change has differential impacts on the welfare of current and future generations. In a simple closed economy, aging -- a relative scarcity of young workers -- increases wages, increasing the welfare of the young. At the same time, population aging will reduce rates of return to...

This paper uses a lifetime framework to address questions about the progressivity of social security and proposed reforms. We use a large sample of diverse individuals from the PSID to calculate lifetime income, to classify individuals into income quintiles, and then to calculate the present...

How much does the current social security system really redistribute from rich to poor? We use the PSID to estimate lifetime wage profiles and actual earnings each year for a sample of 1778 individuals, and we use mortality probabilities to calculate expected payroll taxes and social security...

In the first part of the paper we report estimated transfers in the Social Security system for the Retirement History Survey sample.We define transfers to be the difference between the expected presentvalue of benefits less the present value of taxes paid in, where the latter is adjusted for the...