This study aims to identify the impact of staff turnover on organisational performance, with a focus on Sainsbury's. It discusses the concept of staff turnover, evaluates its impact on overall performance, and explores strategies for increasing staff retention rate. The study uses a thematic data analysis approach with a questionnaire to collect primary research data. The research questions focus on the definition of staff turnover, its impact on organisational performance, and strategies for increasing staff retention rate. The study provides insights into the benefits of effective staff retention strategies and their impact on organisational performance.