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Abstract
This study examines the role of three personal resources (i.e., proactive behaviour, reflective behaviour, and self-efficacy) in the Job Demands–Resources (JD-R) model in order to predict self and other ratings of performance. The sample consisted of 860 Dutch veterinary professionals and 170 colleagues. We hypothesized and found that work engagement mediates the relationship between job as well as personal resources and extrarole performance and the relationship between job resources and work engagement. Although hypothesized, we found no support for the mediating role of exhaustion in the relationship between job demands as well as personal resources and inrole performance. Moreover personal resources were directly related to in- and extrarole performance. In conclusion, the study expands the JD-R model by integrating personal resources at a behavioural level and performance measures in the model, and shows that personal resources have a mediating and initiating role in explaining work engagement and performance in young veterinary professionals.