Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
The strong correlation between child care and maternal employment rates has led previous research to conclude that affordable and readily available child care is a driving force both of cross-country differences in maternal employment and of its rapid growth over the last decades. We analyze a staged expansion of subsidized child care in Norway. Our precise and robust difference-in-differences estimates reveal that there is little, if any, causal effect of subsidized child care on maternal employment, despite a strong correlation. Instead of increasing mothers' labor supply, the new subsidized child care mostly crowds out informal child care arrangements, suggesting a significant net cost of the child care subsidies.