关键词: 母职惩罚, 生育机会成本, 女性劳动供给, 事件分析

Abstract: Using China Family Panel Study ( CFPS) data from 2010 to 2018 and an event-study framework, we explore the impacts of children on the dynamic trajectory of female labor force participation and hours worked. The results show that the arrival of the first child creates a sudden and substantial decrease in the employment and monthly hours worked. The impacts sustain until the child is 4 years old. Within 0 - 3 years after the birth of the first child the employment and the monthly hours worked decreased significantly. Nevertheless, after 4 years beyond the birth of the first child, there is no statistical difference in the employment and monthly hours worked compared with the pre-birth stage. Compared with women, there is no significant impact of children on the labor supply for men.Meanwhile, we provide evidence that the motherhood penalties on labor supply are following the law of diminishing marginal cost. We end with the heterogeneity analyses which show that the college-educated and younger cohorts experience smaller labor supply declines. This study helps understand the magnitude and dynamic trajectory of motherhood penalties in China and provides illumination for the family policy to help women balance family and work and families realize their fertility intention from a perspective of international comparison.