This report explores the HRM implications of the proposed Sainsbury’s and Asda merger, focusing on leadership models, motivational theories, and relevant UK employment laws. It discusses leadership concepts such as the Great-Man Theory, Trait theory, Contingency theory, Transactional leadership, and Transformational leadership, highlighting their significance in organizational behavior. The report also examines motivational theories, including Maslow’s Need Hierarchy Theory and Vroom’s Expectancy Theory, analyzing their impact on employee performance and satisfaction. Furthermore, it addresses redundancy and related employment standards in the UK, particularly concerning employee rights and compensations during mergers and acquisitions. The analysis aims to provide insights for the leadership of the merged entity to effectively manage employees and navigate the complexities of the new working environment.