This study examines the impact of psychological empowerment and organizational commitment on organizational citizenship behaviour. It also tests the mediating effect of organizational commitment between the dimensions of psychological empowerment and organizational citizenship behaviour. Sample of 156 employees was used and data were collected through questionnaires distributed manually. The results suggest that psychological empowerment and organizational commitment have a significant and positive impact of organizational citizenship behaviour; however direct impact of dimensions of psychological empowerment on dimensions of organizational citizenship behaviour is not much stronger but the mediation of organizational commitment makes this relationship significant and positively correlated. The study concludes faculty member show high citizenship behaviour when committed and empowered psychologically.