This report provides an analysis of leadership styles in the context of lean project management, focusing on a case study of SINTEF Ltd., a functional organization. It compares and contrasts various leadership styles, including transactional, autocratic, bureaucratic, democratic, laissez-faire, and transformational, evaluating their suitability for implementing lean principles within SINTEF. The report advocates for the autocratic leadership style due to its efficiency in decision-making and streamlined organizational structure. Furthermore, it outlines key characteristics of valuable team members, emphasizing honesty, reliability, communication skills, and a positive attitude. The report also discusses tools and techniques, such as Kanban and A3 problem-solving, that can facilitate lean business operations. Desklib offers a wide array of resources, including past papers and solved assignments, to support students in their academic endeavors.