This is the introduction and summary to the fourth phase of an ongoing project on Social Security Programs and Retirement Around the World. The first phase described the retirement incentives inherent in plan provisions and documented the strong relationship across countries between social...

The U.S. Social Security system has helped keep many retirees out of poverty. However, according to the Social Security and Medicare Trustees, Social Security faces a future financial shortfall of $10.4 trillion in present value. This enormous imbalance has received little attention in public...

The Social Security earnings test, a version of which still applies to those ages 62-64, reduces immediate payments to beneficiaries whose labor income exceeds a given threshold. Although benefits are subsequently increased to compensate for any such reduction, the earnings test is typically...

Disability Insurance (DI), which provides income support to disabled workers, has been criticized for inducing a large fall in the labor force participation rate of older workers. We study the effects of one policy response designed to address this moral hazard problem: raising the rate at which...

This paper seeks to explain the key two stylized facts of fundamental reforms to social security systems worldwide: Why have so many countries reformed when traditional systems seem, at first glance, to have a higher probability of delivering a secure retirement income? Why have these reforms...