Based on job demands-resources (JD-R) theory, this study examines the relationship between religiosity-from an Islamic lens-and work engagement, and the moderating role of workload on the relationship between these constructs. The results of a survey of 381 Muslim employees in Jordanian telecoms reveal that religiosity is positively related to work engagement. The findings also illustrate the importance of differentiating between challenge and hindrance demands in stressful contexts where workload influences the benefits of religiosity for work engagement. This study highlights the applicability of JD-R theory and extends the theoretical framework by examining the relationship between religiosity and work engagement. It contributes to work engagement literature by introducing religiosity as a personal resource which enhances work engagement and improves well-being.