Using a heterogeneous-agent, life-cycle model of Social Security claiming, labor supply and saving, we consider the implications of lifespan inequality for Social Security reform. Quantitative experiments show that welfare is maximized when baseline benefits are independent of lifetime earnings,...

The Norwegian population will pass through an ageing process during the next decades which causes that the old-age-dependency ratio rises from currently 22 per cent up to 38 per cent in 2050 and 47 per cent in 2100. This ageing population induces increasing expenditures on old-age and disability...