We leverage the onset of type 1 diabetes (T1D) in childhood to estimate the impact of a childhood health shock on parental labor supply. T1D is the second most common childhood chronic physical health condition, inheritability is low, the exact cause is unknown, the onset is unpredictable, and receiving treatment is crucial to survival. Using Danish administrative registry data with both an event study and difference-in-differences analysis shows that mothers shift to part-time work, marginally shift from the private to public sector, and experience a long-term 4-5% decrease in wage income. The dynamic effects reveal large initial impacts, but the magnitudes decrease (although are not eliminated) over time. Fathers do not experience any long-term reduction in wage income. This suggests part of the motherhood penalty is likely due to mothers bearing the economic burden when their child is diagnosed with a chronic health condition.

我们利用儿童时期 1 型糖尿病 (T1D) 的发病情况来估计儿童期健康冲击对父母劳动力供应的影响。T1D 是第二常见的儿童慢性身体健康状况，遗传性低，确切原因不明，发病不可预测，接受治疗对生存至关重要。使用丹麦行政登记数据进行事件研究和差异分析表明，母亲转向兼职工作，从私营部门略微转向公共部门，工资收入长期下降 4-5% . 动态效应揭示了巨大的初始影响，但随着时间的推移，幅度会降低（尽管并未消除）。父亲的工资收入不会长期减少。