The rapidly aging populations of many developed countries--most notably Japan and member countries of the European Union--present obvious problems for the public pension plans of these countries. Not only will there be disproportionately fewer workers making pension contributions than there are...

A key figure which can be applied to measuring inter-generational imbalances involved in existing public pension schemes is given by the implicit tax that is levied on each generation s life-time income through participation in these systems. The implicit tax arises from the fact that, quite...