This report provides a comprehensive analysis of organisational behaviour within Tesco plc, a major UK-based multinational grocery store. The study examines the influence of power, culture, and politics on individual and team behaviour, utilizing Handy's typology to understand Tesco's organizational culture across power, role, task, and person cultures. It further explores the impact of various power structures, including coercive, legitimate, referent, and expert power, as defined by French and Raven. The report then evaluates content and process theories of motivation, particularly Maslow's hierarchy of needs and Vroom's expectancy theory, and how these theories are applied to enhance employee performance and achieve organizational goals. The analysis extends to team effectiveness, differentiating between effective and ineffective team dynamics. Finally, the report applies the concepts and philosophies of organizational behaviour within the specific business context of Tesco, including the application of positive politics and the importance of employee engagement.