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...

The public sector has grown substantially in the last fifty years. In the euro area, for example, total government expenditures have been around fifty percent of GDP since the early 2000s, resulting in a growing tax burden or high public debt or both. At the same time, government had intervened...