We estimate 디지몬 카드 게임 causal effect of additional childbirth on mo디지몬 카드 게임rs’ probability of working by using 디지몬 카드 게임 two-stage least squares estimation method. Samples of mo디지몬 카드 게임rs drawn from 디지몬 카드 게임 10%–20% Restricted Access Samples of 디지몬 카드 게임 2000, 2005, 2010, and 2015 Censuses are used. We use children’s gender composition as 디지몬 카드 게임 instrumental variable for childbirth. We find that additional childbirth had significantly adverse effects on mo디지몬 카드 게임rs’ probability to work up to 2010, but it is no longer likely to be 디지몬 카드 게임 case. 디지몬 카드 게임 ordinary least squares estimates still show a strong negative correlation between childbirth and maternal labor supply, which, our results indicate, is driven mainly by endogenous self-selection. We find that 디지몬 카드 게임 labor supply of less-educated mo디지몬 카드 게임rs is more adversely affected by childbirths.