In the real world, public pay-as-you-go pension (PAYG) schemes are popular and co-exist with private, retirement-saving schemes. This is true even in dynamically efficient economies where such pensions offer a lower return. The classic Aaron-Samuelson result argues that, in theory, this is...

A growing literature explores reasons for rising wealth inequality, but disregards the role of pension systems despite their well-understood infiuence on life-cycle saving. In theory and according to available evidence, both pay-as-you-go (PAYG) and fully-funded (FF) pension schemes crowd out...

The welfare state is not merely a stand-in for missing markets; it can do a whole lot more. When generations overlap and the young must borrow to make educational investments, a dynamically-efficient welfare state, by taxing the middle-aged and offering a compensatory old-age pension, can...

In this paper we assume away standard distributional and staticefficiency arguments for public health and instead seek a dynamic efficiency rationale. We study a lifecycle model wherein young agents make health investments to reduce mortality risk. We identify a welfare rationale for public...