Complex sentence: Bullying in the workplace is in the majority of cases reported as having been perpetrated by someone in authority over the target, but bullies can also be peers, or in rare occasions be subordinates Rayner, C., & Cooper, C. L. (2006).
Split into simpler sentences: Bullying in the workplace is in the majority of cases reported as having been perpetrated by someone in authority over the target. However, bullies can also be peers, and on occasion can be subordinates Rayner, C., & Cooper, C. L. (2006).