As women increasingly entered the labor force throughout the late 20th century, the challenges of balancing work and family came to the forefront. We leverage pronounced changes in the availability of public schooling for young children--through duration expansions to the kindergarten day--to better understand mothers' and families' constraints.…

We examine the effects of offering full-day kindergarten as a replacement for half-day kindergarten on mothers' labor supply using the rollout of full-day kindergarten in Ontario, Canada. We find no effect on the extensive margin but found an effect on the intensive margin. In particular, we find that access to full-day kindergarten increases…