Time-inconsistent, present-biased agents may hold commitment assets hoping to keep their current and future present bias in check. Paternalistic governments, in an effort to help such people, routinely offer commitment machinery such as restrictions (or bans) on early withdrawals from...

Increasing longevity causes an upward trend in the dependency ratio in many countries. This raises concerns about the financial sustainability of social security schemes, and reform initiatives and proposals abound. It is shown that a fundamental policy choice inevitably arises since a given...

Many countries face the problem of how to reform social security systems to cope with increasing life expectancy. This raises questions concerning both distribution and risk sharing across generations. These issues are addressed within an OLG model with stochastic life expectancy across...