Measuring the Effect of Disability on Labor Force Participation
利用症状或疾病作为工具变量，在联立方程模型中估计残疾对劳动力参与的影响，发现各残疾指标能解释劳动力参与的显著变化，但内生性证据较弱且影响方向与文献假设相反。
This paper estimates the effect of disability on labor force participation by using symptoms or diseases as instruments in a simultaneous equations model of endogenous reported disability and labor force participation. The results show that each measure of disability explains a significant amount of variation in labor force participation, though the two are not perfect substitutes. There is only weak evidence of endogeneity of the disability variables. For cases where there is evidence of endogeneity, the bias it causes has the opposite effect of that hypothesized in the literatute (i.e., stress causes health to deteriorate with labor force participation). Furthermore, it has only insignificant effects on the coefficients for other variables.