In this chapter, we analyse the effects of PAYG and funded pension systems on welfare. The debate on the choice between alternative systems focuses on their effects on savings, capital accumulation, labour supply, economic growth and inequality and the potential benefits of mixed systems in...

When markets are incomplete, social security can partially insure against idiosyncratic and aggregate risks. We incorporate both risks into an analytically tractable model with two overlapping generations and demonstrate that they interact over the life-cycle. The interactions appear even though...