The social security payroll tax has become the largest tax paid by the majority of American households. Although, the statutory marginal social security tax rate is the same for all those with wage and salary income up to the maximum level, the complex rules linking social security taxes and...

This paper analyzes the incentives provided by the Italian Social Security System (SS) to supply labor. Italy is an interesting example in this context as: (1) fertility rates are very low while life expectancy has improved dramatically over the past decades; (2) the SS Program is extremely...