Although the contribution of transformational leadership to employee organizational commitment is well documented, the mechanisms that explain such relationship remain unclear. In the present research, we propose that transformational leadership can influence organizational commitment through impacting followers’ perceptions of job characteristics (i.e., feedback from job, task variety, and decision‐making autonomy). Structural equation modeling analyses conducted on a sample of employees from multiple organizations in France (N = 488) found the relationships between transformational leadership and four components of organizational commitment (i.e., affective, normative, perceived sacrifice, and few alternatives commitment) to be partly mediated by followers’ perceptions of task characteristics. We discuss the relevance of these findings for theory and human resource development.