Counter-cyclical variation in individuals' idiosyncratic labor income risk could generate substantial welfare costs. Following past research, we infer income volatility - the variance of permanent income shocks, a standard proxy for income risk - from the rate at which cross-sectional variances...

Subsidized health insurance markets use diagnosis-based risk adjustment to induce insurers to offer an equitable benefit to individuals of varying expected cost. I demonstrate that technological change after risk adjustment calibration -- new drug entry and the onset of generic competition --...

Public health insurance is increasingly provided indirectly by private health insurers receiving government subsidies. Previous models find that these subsidies can cause insurers to distort benefits towards services that attract profitable individuals and conversely to provide less favorable...

"I use data from the Current Population Surveys and Employee Benefits Surveys to analyze employer-sponsored disability insurance coverage. There does not appear to be a systematic trend from 1980 to 2000 in the fraction of workers with coverage. Disability insurance coverage rates are lower than...