This report presents a business research study on the impact of leadership styles on employee performance, focusing on Fonterra Co-operative Group Limited in New Zealand. The research explores the effects of autocratic, democratic, and laissez-faire leadership styles on employee productivity, job satisfaction, and overall organizational outcomes. The report outlines the research process, including problem statement, literature review, research questions, methodology (quantitative and qualitative), data analysis techniques, and a timeline. It aims to identify the most effective leadership style for enhancing employee performance within Fonterra, considering factors such as accountability, flexibility, and innovation. The study emphasizes the significance of leadership in fostering a positive work environment and suggests recommendations for Fonterra to improve its leadership strategies and achieve higher levels of employee engagement and organizational success. The report also includes resources, a timeline, and recommendations for future research and implementation.