Results of a study have shown that job autonomy (being able to exercise control over ones work) helps employees respond to demands and stressors at work so that they can maintain more energy. Having control over ones work helps individuals to decide how to direct and use their attention and resources so that they can face demands in the best way possible.
Prem, R., Kubicek, B., Diestel, S., & Korunka, C. (2016). Regulatory job stressors and their within-person relationships with ego depletion: The roles of state anxiety, self-control effort, and job autonomy. Journal of Vocational Behavior, 92, 22-32.