Human inappropriate behaviour is being criticised for changing the climate because it wastes resources, pollutes water and contaminates the air, thereby demeaning the environment. To contribute to the United Nations’ sustainable development goals for 2019, companies have begun to focus on green human resource initiatives to promote green perspectives in their employees. In this regard, green human resource management may assist companies in motivating their employees towards environmentally friendly practices, but green perceived organisational support remains unexplored in this context. To address this gap, based on the theory of planned behaviour, this study aims to investigate the effect of green human resource management on employee green behaviour through the mediation effect of green perceived organisational support in the higher education sector of Pakistan. The questionnaire survey was used to collect data from the employees of the higher education sector. Findings show that green human resource management is a strong predictor of employee green behaviour, while green perceived organisational support is a significant mediator between green human resource management and employee green behaviour. Theoretical implications and practical significance have been addressed in this study.