  This paper studies the effects of legislation mandating workplace
breastfeeding amenities on various labor market outcomes. Using the Panel Study
of Income Dynamics, I implement both a traditional fixed-effects event study
framework and the Interaction-Weighted event study technique proposed by Sun &
Abraham (2020). I find that workplace breastfeeding legislation increases the
likelihood of female labor force participation by 4.2 percentage points in the
two years directly following implementation. Female labor force participation
remains higher than before implementation in subsequent years, but the
significant effect does not persist. Using the CDC's Infant Feeding Practices
Survey II, I then show that breastfeeding women who do not live in states with
workplace breastfeeding supportive legislation are 3.9 percentage points less
likely to work, supporting the PSID findings. The legislation mainly impacts
white women. I find little effect on labor income or work intensity.
