This study was aimed to identify the level and the effect of workload, supervisor support and co-workers support on work engagement among boarding school teachers in Selangor. Quantitative approaches with non-experimental design were used for this study. A number of 274 teachers from boarding schools in Selangor were chosen using random sampling methods as studied samples. Research instrument involve questionnaires that was adapted and modified according to the needs and suitability of this study. Data obtained were analyzed using Statistical Package for the Social Sciences (SPSS) version 23 and descriptive statistical analysis was conducted to explain the level of workload, supervisor support, coworkers support and work engagement. Inferential statistical analysis is also implemented and involves multiple regression analysis that describes the impact of workload, supervisor support and co-workers support on work engagement. The result showed that the level of workload was moderate, while the level of supervisor support, co-workers support and work engagement were high. The findings of the study also revealed that there were a significant effect between workload (β = .149, p < .05), supervisor support (β = .184, p < .05), co-workers support (β = .461, p < .05) on teachers' work engagement. Implication from this study, school management can utilize the views of teachers on the aspects studied and make the information as a useful tool to further increase work engagement among teachers.