This report examines the values and contributions of Human Resources (HR) to organisational success, focusing on change management models and theories, particularly Lewin's change management model and the Nudge Theory. It evaluates the role of HR in organisational design and managing change, critically assessing different types of changes and the complex relationship between organisational design and change management. The analysis includes a case study of Marks and Spencer (M&S), highlighting the importance of adapting to consumer choices and maintaining product quality. The report concludes with recommendations for M&S to focus on consumer preferences and continuous improvement, with the aim of improving productivity and decision-making processes. Desklib provides access to this and other solved assignments for students.