Pensions may be provided for in a modern society by several methods, viz., voluntary individual savings, mandatory fully funded occupational pension systems, and mandatory social security financed by pay-as-you-go. The specific mixture of the three systems we will call the pension composition....

Social security is increasingly debated in terms of alleged effects of public pensions on economic efficiency. The author reviews the history and rationale for public provision of retirement income, then argues that the efficiency effects of such schemes are negligible. Social security reform in...