This chapter reviews the theoretical and empirical issues dealing with Social Security pensions. The first part of the chapter discusses pure pay-as-you-go plans. It considers the effects of introducing such a plan on the present value of consumption, the optimal level of benefits in such plans,...

Social security is the largest and perhaps the most popular program run by the federal government. Given the projected increase in both individual life expectancy and sheer number of retirees, however, the current system faces an eventual overload. Alternative proposals have emerged, ranging...

Because its benefit formula replaces a greater fraction of the lifetime earnings of lower earners than of higher earnings, Social Security is generally thought to be progressive, providing However, much of the intra-cohort redistribution in the U.S. Social Security system is related to factors...