This study measures the effect of disability insurance on labor supply and health insurance coverage. The effect is identified by a policy in 1990 that increased the generosity of Social Security's disabled-widow program. Using data from the Current Population Survey, the results suggest that, in this context, disability benefits led to a one-to-one decline in labor force participation, employment, and private insurance coverage. The results imply that the demand for disability benefits may not reflect a latent demand for public health insurance.