The Effect of Public Insurance Coverage for Childless Adults on Labor Supply
利用威斯康星州公共保险注册上限的突然实施，通过回归断点设计和双重差分法发现，无子女成年人获得公共保险后就业率下降约5个百分点（12%），排除了正向或大幅负向效应。
This study provides plausibly causal estimates of the effect of public insurance coverage on the employment of non-elderly, nondisabled adults without dependent children (“childless adults”). We take advantage of the sudden imposition of an enrollment cap in Wisconsin, comparing the labor supply of enrollees to eligible applicants placed on a waitlist using a regression discontinuity design and difference-in-differences methods. We find enrollment into public insurance leads to sizable and statistically meaningful reductions in employment, with an estimated effect size of just over 5 percentage points, a 12 percent decline. Confidence intervals rule out positive and large negative effects.