Green Human Resource Management (GHRM) is a strategic approach that integrates eco-friendly practices into the core functions of HR, extending beyond traditional approaches to align with broader environmental goals. Key components include sustainability-aligned HR strategies, employee engagement in eco-friendly initiatives and embedding environmental considerations into policies. GHRM emphasizes green recruitment, sustainable training, and integrating environmental metrics into performance management. The rationale for GHRM adoption encompasses CSR alignment, cost savings, legal compliance, enhanced employee engagement, and improved brand image. Its importance is evident in contributions to environmental sustainability, compliance, cost-effectiveness, employee engagement, CSR alignment, talent attraction, innovation, long-term viability, global reputation, and risk management. The “Green Horizons” case study compilation offers insights into successful GHRM implementations across industries, showcasing seamless integration of eco-friendly practices and emphasizing enduring benefits like enhanced corporate reputation, increased employee satisfaction, and significant cost savings. This compilation serves as a practical guide, inspiring organizations to embrace greener HR practices for a collective contribution to a sustainable future.