A clarification of the ERI model : the importance of personality

The present study aimed to investigate the role of personality in the etfort-reward imbalance model along with the construct validity of overcommitment in relation to Type A behaviour. The study sample consisted of 898 operational law enforcement persolllel from a large Australian police service. Factor analysis revealed that the overcommitment construct was psychologically related to, but distinct from, the Type A dimensions achievement striving, impatience-irritability and hostility despite the hypothesised interrelatedness of the measures. Multiple regression analyses including tests for curvilinear effects revealed that the Type A dimensions made a significant improvement to the prediction of employee wellbeing and job satisfaction, The results of the study provide theoretical implications in terms of the augmentation of the effort-reward imbalance model.