Even as life expectancy in many countries has continued to increase, social security and similar government programs can provide strong incentives for workers to leave the labor force when they reach the age of eligibility for benefits. Disability insurance programs can also play a significant...

In nearly every industrialized country, large aging populations and increased life expectancy have placed enormous pressure on social security programs—and, until recently, the pressure has been compounded by a trend toward retirement at an earlier age. With a larger fraction of the population...

Many countries have social security systems that are currently financially unsustainable. Economists and policy makers have long studied this problem and identified two key causes. First, as declining birth rates raise the share of older persons in the population, the ratio of retirees to...