In-work support through the tax-benefit system has proved to be an effective way of increasing the labor supply of lone mothers and first earners in couples in a number of OECD countries. At the same time, these instruments usually create negative employment incentives for secondary earners....

Our study explores the impact of selection criteria on the costs and benefits of early childcare for mothers’ employment, child development, and municipalities’ revenues by exploiting the selection criteria of different Italian municipalities in assigning childcare slots. In Italy, only...