High turnover rates have been a significant issue negatively impacting organisational performance, especially in developing countries. Though studies have aimed to proffer theoretical and empirical solutions to curb it, it still persists globally. Thus, this study examines the role of high commitment human resource systems on the level of turnover intention within companies in Saudi Arabia, considering the mediating effect of affective commitment and workload. To measure the relationship between these variables, this study collected data from an online survey of 82 participants who are working in various Saudi Arabian companies. The gathered numeric data were analysed using SPSS. The findings indicate that employee turnover is highly influenced by high commitment HR systems and affective commitment within Saudi Arabian organisations. This study suggests that management should implement effective HR policies that will aid the organisation to gain a competitive advantage. Also, HR managers should communicate effectively with lower-level employees to identify any issues that face them.