근로시간이 주관적 건강상태에 미치는 영향:내생적 순서형 프로빗 모형을 중심으로

Despite the fact that statutory working hours based on the Labor Standards Act have been continuously shortened, the working hours of Korea worker are the third longest in OECD countries. Long working hours can be directly linked to workers' health. In this study, I use the 7th (2004) to 19th (2016) of the Korea Labor & Income Panel Survey (KLIPS) data to estimate the effects of working hours on workers’ self-rated health from 2004 to present. As an econometric strategy, I employ he endogenous ordered probit model regarding endogeneity of inverse causality between working hours and subjective health status. Empirical evidence shows that first, there is a significant 10 times difference of estimated coefficient between the model considering endogeneity and the model not considering it. The results show that the endogenous ordered probit model is appropriate regarding both endogeneity of explanatory variable and suitable instrument variable. This means that it is important to control adverse causal relationships in the empirical analysis between working hours and self-rated health. In addition, the longer hours of statutory working hours and total working hours effects, the higher probability of belonging to the category with poor subjective health status. Moreover, the effect of total working hourswas greater than regular working hours on self-rated health.