"Humanitarian Work Psychology and the Global Development Agenda: Case Studies and Interventions" delves into the burgeoning field of organizational psychology applied to humanitarian concerns. This manual examines how established principles of work psychology can be effectively utilized to address pressing global development challenges. It explores the intersection of psychological principles and humanitarian work, demonstrating how these can be leveraged to improve the lives of individuals and communities worldwide. The content within this manual offers a comprehensive exploration of the field, presenting real-world case studies that illustrate the practical application of work psychology in humanitarian contexts. These case studies provide valuable insights into effective interventions and strategies for promoting well-being, fostering resilience, and empowering individuals and communities.