
Pregnant officers, experienced mothers, and single women used less leave than nonpregnant women in the months leading up to birth, but expecting additional post-birth leave did not change average pre-birth leave-taking. Although all mothers used the full 6 weeks of leave in the early period, it is the less advantaged mothers-those in the enlisted ranks, first-time mothers, and single mothers-who disproportionately used more of the additional leave than officers, experienced mothers, and married mothers. However, the policy changes crowded out other forms of leave: with an increase in maternity leave available, mothers increased use of maternity leave and stopped supplementing with additional annual leave. Leave expansions increased leave duration, whereas contractions decreased leave taken by active-duty service members. Marine Corps has shifted its maternity leave policy from 6 to 18 to 12 weeks. This study exploits changes in paid maternity leave offered by one of the United States’ largest employers, the Department of Defense, to estimate the effect of such policies on mothers' leave-taking. On the whole, paid leave policies appear to have helped support mothers’ primary caregiver role while simultaneously encouraging a more gender egalitarian division of housework.

California and New Jersey paid leave policies declined mothers’ and fathers paid work after new births, increased mothers’ care work but not fathers’, and increased fathers’ housework but not mothers’.

I find that change was modest and uneven. I use data from the Current Population Survey 1990-2020 and the American Time Use Survey 2003-2019 and quasi-experimental differences-in-differences models to examine the impact of the introduction of paid leave policies in California and New Jersey on paid and unpaid work outcomes among different-sex couples.

While previous research has examined the impact of paid leave policies on paid or unpaid work among mothers or fathers separately, this is the first study to examine comprehensively how these benefits shape both mothers and fathers and both paid and unpaid work outcomes.

This study considers the potential of paid leave policies to intervene in this key life-course juncture and promote more gender egalitarian divisions of paid and unpaid work. The birth of a new child continues to exacerbate gender specialization among different-sex couples.
