This report discusses the role of culture in organisational behaviour, focusing on its impact on employee motivation, communication, and organisational success. It explores different theoretical models of organisational culture and how they influence employee behaviour. The report also highlights the importance of effective communication in developing a positive workplace culture. Additionally, it examines the role of culture in enhancing employee motivation and contributing to organisational success. The case study of Tesco, a British multinational groceries retailer, is used to illustrate these concepts.