The mediating role of job enrichment in relations Between transformational leadership components with Personnel''s affective commitment

This research carried out with the purpose of investigates the mediating role of job enrichment in relations between transformational leadership components with affective commitment. Research statistical populations were the industries under licensees in industry and mineral domain of EhyaSepahan Company2500 persons in summer of 1388. From this statistical population, 329 persons selected with the using of tow stage sampling. For data collection questionnaire has been used. Questionnaires which has been used including transformational leadership with 22 items and four subscales namely, group goals, personal support, intellectual role model and high performance expectancies, job diagnostic survey with 23 items for assessment of job enrichment and affective commitment with 8 items. Data from research questionnaires analyzed with the using of structure equation modeling and mediation regression analysis. Primary model has been presented on the basis of transformational leadership components as a predictor variable, job enrichment as the mediator variable and affective commitment as a criterion variable. Results from structure equation modeling showed that there is not significant relation between group goals with job enrichment, therefore this path has been deleted from research model, and conversely a path added from intellectual role model to affective commitment for improvement of model. In general, the results of this research revealed that, job enrichment played a complete mediator role in relations between personal support and high performance expectancies as a two components of transformational leadership with affective commitment, but in relation between intellectual role model as another component of transformational leadership with affective commitment, job enrichment played the partial mediator role.