Is it really a mediating construct?

This paper aims at exploring the mediating role of organizational commitment that continues to be one of the most controversial issues in HRM. Using a self‐administered questionnaire, 1,000 employees from 20 industrial companies were randomly selected and surveyed in order to examine this mediating role. The results revealed that organizational commitment and its two factors (normative and continuance commitment) play different roles in mediating the relationship between perceived work climate and performance, as rated by the employees themselves and their immediate supervisors. The implications of the results for both managers and researchers are also discussed in the paper.