Most European Union countries are facing with major problems regarding their public pension systems. Romania has large difficulties in its public pension system, of which we consider the most important is the large number of beneficiaries and the small number of contributors, that determine a...

This paper proposes a method for the welfare analysis of pay-as-you-go social security systems. We derive a formula for the welfare consequences of a permanent marginal change in the payroll tax rate that is valid under weak assumptions about the deep structure of the economy. Our approach...

This paper examines the labor market implications of a mandatory social insurance scheme introduced in Ethiopia in 2011 for private sector employees in the formal sector. We use firm-level panel data and exploit differences in pre-reform pension plans across firms to identify the effects of the...