The effect of working hours on health.

Does working time affect workers' health behavior and health? We study this question in the context of a French reform that reduced the standard workweek from 39 to 35 hours, at constant earnings. Our empirical analysis exploits arguably exogenous variation in the reduction of working time across employers due to the reform. We find that the shorter workweek reduced smoking by six percentage points, corresponding to 16% of the baseline mean.

Birth weight and vulnerability to a macroeconomic crisis.

This paper shows that early-life health is an important determinant of labor market vulnerability during macroeconomic downturns. Using data on twins during Sweden's crisis of the early 1990s, we show that individuals with higher birth weight are differentially less likely to receive unemployment insurance benefits after the crisis as compared to before it, and that this effect is concentrated among workers in the private sector. While differences in early-life health thus lead to increased inequality in employment outcomes, we also find that there is no differential effect of birth weight on total income after the crisis.