In the present study, a short-term program for managers that leads to the prevention of power harassment and improvement of work engagement was developed and its effectiveness was examined. The program consisted of anger management, assertion skills, active listening, power harassment education, relaxation, and mindfulness, and aimed to promote an empathic attitude from managers to subordinates and communication with respect for self and others. Three longitudinal questionnaire surveys, one management program, and a public relations magazine were distributed to 470 workers (Managers: 40, Members: 430) in a pharmaceutical company from April to October 2022. A control period and an intervention period were set for all survey participants. We examined the hypotheses that the improvement in the relationship of managers to their subordinates who attended the program to be more empathetic would reduce the damage caused by power harassment to their subordinates and improve their work engagement. The results of repeated measures analysis of variance partially supported the hypothesis. It suggested the effect of strategically deterring power harassment to increase work engagement.