This study uses panel data from the Health and Retirement Study (HRS) to estimate the effects of Social Security income on elderly labor supply in the 1990s and early 2000s. The identification strategy takes advantage of the 1977 amendments to the Social Security Act, which led to a large,...

This article uses US Census data from 1980, 1990, and 2000 to estimate synthetic-cohort life cycle effects of fertility on women's and couples' labour supply. Multiple births are used as an instrument to control for unobserved heterogeneity. For single women, the causal effect of fertility has...