This research project investigates the impact of workplace discrimination on employee efficiency, focusing on a case study of Marks and Spencer (M&S). The study begins with an introduction outlining the research aim, objectives, and questions, followed by a review of existing literature on workplace discrimination and its various dimensions, including gender, age, and cultural biases. The methodology section details the research approach, strategy, and tools, including a quantitative approach using questionnaires and a probabilistic sampling method with 40 respondents. Findings from the questionnaire responses reveal insights into employees' awareness of workplace discrimination, its impact on performance, and potential solutions such as training and development programs. The discussion chapter analyzes the findings, interpreting the data and highlighting key themes. Finally, the project concludes with recommendations for M&S to mitigate discrimination, enhance employee efficiency, and foster a more inclusive work environment, including suggestions for future research. The research underscores the importance of addressing workplace discrimination to improve employee productivity, reduce turnover, and maintain a positive work environment.