This project proposal aims to analyse the impact of employee turnover on organisational performance, focusing on Tesco as a case study. It begins by introducing the increasing employee turnover rates in companies and its implications for organisational success. The proposal outlines the aims and objectives of the research, including understanding the concept of employee turnover, examining its reasons, and analysing its impact on organisational performance. The literature review discusses voluntary and involuntary turnover, reasons for employee attrition such as lack of growth, overwork, and poor management, and the effects of turnover on employee productivity and organisational financial performance. The proposed methodology involves quantitative research using online employee profiles for data collection. The proposal concludes by highlighting the importance of addressing employee turnover and its challenges for organisations.