Recent work situates gender norms as a key driver of the sexual division of labor. But the explanatory power of Becker’s comparative advantage explanation is still not well understood. Drawing on unique data, we test the predictions of a formal Beckerian model. We complement this by proposing and analyzing new measures of specialization. We show that comparative advantage plays little or no role in the sexual division of labor within couple households. Absolute advantage also plays no role in specialization for same-sex couples, and this is not explained by having fewer children.

We estimate the effect of Vietnam-era Army service on mortality, exploiting Australia's conscription lotteries for identification. We utilize population data on deaths during 1994–2007 and military personnel records. The estimates are identified by over 51,000 compliers induced to enlist in the Army. We find no statistically significant effects on mortality overall, nor for any cause of death. The estimated relative risk (RR) of death associated with Army service is 1.03 (95% CI: 0.92, 1.19). On the assumption that Army service affected mortality only for those who served in Vietnam, the estimated RR is 1.06 (95% CI: 0.81, 1.51).