This article discusses the importance of employee relations in influencing HRM decision making at Marks & Spencer. It explores how healthy relationships between employees can lead to increased productivity, conflict reduction, and employee loyalty. The article also examines the key elements of employment legislation, such as the Equality Act 2010 and the Health and Safety Act 1974, and their impact on HRM decision making. Additionally, it highlights how employee relations can inform and impact HRM decisions, including reducing stress, improving employee discipline, and addressing employee grievances.