Based on the person-organization fit theory, this research aims to investigate how socially responsible HRM (SRHRM) positively affects employees’ organizational citizenship behaviors toward the environment (OCBE) by increasing personorganization fit. This study also captures the moderating effect of the perceived role of ethics and social responsibility (RESR) in influencing the indirect effect of SRHRM on OCBE via person-organization fit. Data were collected from 302 employees in a state-owned chain hotel in Shanghai, China. The results indicated that SRHRM indirectly influenced employee’s engagement in OCBE through person-organization fit. The positive relationship between SRHRM and person-organization fit and the indirect effect of SRHRM on OCBE via person-organization fit were more significant when employees hold high rather than low levels of RESR. Research implications and prospects were also explored in this study.