'Green social enterprises occupy a unique position at the intersection of environmental sustainability and social impact, yet the organizational mechanisms that sustain their environmental mission have received little attention from scholars. This book addresses that gap with remarkable insight and intellectual rigor. The authors convincingly demonstrate that mission-driven organizations cannot assume employees will naturally embrace environmental values. Instead, pro-environmental behaviour emerges through carefully designed human resource management practices, reciprocal relationships, fulfilled psychological contracts, and genuine organizational support. By integrating robust theoretical foundations with practical implications, this book makes a significant contribution to green human resource management practices and social enterprise research. It is an essential resource for scholars, practitioners, and policymakers seeking to understand how organizations can effectively align employee behaviour with their environmental purpose and translate sustainability aspirations into lasting organizational impact.'.