This report examines the critical aspects of International Human Resource Management (IHRM) for UK companies considering call center operations in Japan. It begins by outlining the cultural and environmental factors that UK companies must navigate, including language barriers, differing norms, values, religious beliefs, political views, economic and legal environments, environmental considerations, and technological variations. The report then delves into the specific issues faced by UK companies in Japan, such as shortages of skilled managers, compliance with local laws and regulations, the need for effective management changes, leadership development, workforce training, workplace diversity, employee benefits and packages, recruitment and retention of talented employees, adaptation to technological innovations, and compensation structures. The analysis highlights the importance of effective HRM for creating a unique workplace culture, understanding company expectations, promoting diversity, strengthening employee training, and reducing employee uncertainty. Finally, the report discusses the applicability of the Harvard model for HRM in the context of UK businesses operating in Japan, emphasizing the importance of stakeholder interests and situational factors in shaping HRM policies.