The unfunded social security has long been criticized for reducing capital stock and social welfare. In this paper, we study the aggregate and welfare effects of reforms that make social security tax (SST) age dependent. We characterize the optimal age-dependent SST schedule that maximizes...

This paper investigates the inter-temporal structure of implicit taxes that arise in unfunded pension schemes. We demonstrate that these tax rates are declining over the life cycle. Using German micro-data for men and married women we estimate periodic wage elasticities of labour supply in order...

We suggest a political economy explanation for the stylized fact that intragenerationally more redistributive social security systems are smaller. We relate the stylized fact to an "efficiency-redistribution" trade-off to be resolved by political process. The inefficiency of social security...

One of the stylized facts of unfunded social security programs is that programs are larger in size, measured relative to the GDP, the tighter the link between pension claims and past earnings. We provide a political economy explanation of this stylized fact in a median voter model, where people...

This paper investigates the inter-temporal structure of implicit taxes that arise in unfunded pension schemes. We demonstrate that these tax rates are declining over the life cycle. Using German micro-data for men and married women we estimate periodic wage elasticities of labour supply in order...

Traditional analyses of retirement decisions focus on the age, from birth, of the individual making choices about how much to work, consume, and save for old age. However, remaining life expectancy is arguably a better way of examining these issues. As mortality rates decline, people at a given...

Traditional analyses of retirement decisions focus on the age, from birth, of the individual making choices about how much to work, consume, and save for old age. However, remaining life expectancy is arguably a better way of examining these issues. As mortality rates decline, people at a given...