Can child benefit reductions increase maternal employment? Evidence from Japan

This study estimates the policy impacts of the resumption of income thresholds for receiving child benefits (CB), in April 2012, on maternal labor market participation, childcare services use, and child health outcomes in Japan. Using data from the Longitudinal Survey of Newborns in the 21st Century and employing a regression discontinuity design, we found that the reduction of CB payments in higher-earning households, where the annual income of the household head exceeded their threshold, promoted intensive and extensive margins of maternal labor supply, especially for part-time workers and the self-employed. Furthermore, mothers returned to the workplace using non-accredited childcare and increasing the total childcare costs but having no impact on children's health outcomes. Heterogeneous effects were also observed in prefectures with low availability of accredited childcare; mothers incurring CB reduction used non-accredited childcare to start full-time employment. These findings imply that CB reduction had the advantage of encouraging maternal employment and, especially in prefectures with few childcare facilities, increasing the number of accredited childcare centers and that reducing the price of non-accredited childcare services can make it easier for mothers to return to the workforce after giving birth.