We examine the impact of offering full-day as a replacement for half-day kindergarten on mothers' labour supply using … the rollout of full-day kindergarten in Ontario, Canada. We find no impact on the extensive margin but do find one on the … intensive margin. In particular, we find that access to full-day kindergarten increases weekly hours worked and decreases …

Full-day kindergarten programs are expanding across North America, driven by a policy focus on early childhood … full-day kindergarten in Ontario's French - but not English - schools. We find no robust evidence of labour supply effects …

—through duration expansions to the kindergarten day—to better understand mothers’ and families’ constraints. We first show that mothers … of children in full-day kindergarten spend significantly more time at work, less time with their children, less time …-day kindergarteners. Exploiting full-day kindergarten variation across place and time from 1992 through 2022, combined with the narrow age …