A positive, fulfilling, work-related state of mind that is characterized by vigor, dedication, and absorption. Engagement refers to a persistent and pervasive affective–cognitive state that is not focused on any particular object, event, individual, or behavior.
Schaufeli, W. B., & Bakker, A. B. (2004). Job demands, job resources, and their relationship with burnout and engagement: A multi‐sample study. Journal of Organizational Behavior, 25(3), 293-315. doi: 10.1002/job.248.