Green Human Resource Management (GHRM) integrates sustainability principles into core HR practices, including recruitment, training, development, engagement, and retention, to strengthen employees’ environmental commitment within organizations. Employees’ environmental commitment refers to the psychological attachment and sense of responsibility individuals feel toward organizational environmental goals, motivating them to support eco-friendly practices in the workplace. GHRM promotes the incorporation of sustainable practices into organizational systems and operations, such as energy and water conservation, waste reduction, and environmentally conscious workplace design. The framework of GHRM is effectively explained through the Ability–Motivation–Opportunity (AMO) theory, which posits that employees demonstrate pro-environmental behavior when organizations enhance their abilities (e.g., environmental knowledge and self-efficacy), motivation (intrinsic and extrinsic incentives), and opportunities (organizational support, leadership encouragement, and participatory initiatives). The findings of this conceptual study indicate that GHRM is positively associated with employees’ pro-environmental behavior, increased environmental knowledge and awareness, a supportive psychological green climate, higher employee engagement and commitment, and improved sustainable organizational performance.