This study aims to explore how green human resource management enhances employees' pro-environmental behavior via the mediating role of corporate environmental strategy and green psychological climate. Moreover, the moderating effect of environmental consciousness is examined which is almost ignored in the prior studies. Quantitative research methods were used and data were collected using a structured questionnaire from 161 employees in the health sector of Punjab, Pakistan. PLS-SEM was used to conduct analysis. The findings highlight that corporate environmental strategy and green psychological climate mediate the relationship between green human resource management and pro-environmental behavior. Furthermore, various HR practices cast more impact on the corporate environmental strategy than others. The highly significant GHRM practices can be focused more on for a better environmentally-conscious workforce. The study provides valuable insight to academicians and practitioners. The healthcare sector of developing countries can channelize their limited resources on the significant green human resource practices that will lead to increasing employees’ pro-environmental behavior.