Day-level transformational leadership and followers' daily level of stress: a moderated mediation model of team cooperation, role conflict, and type of communication

This study contributes to the literature on leadership by linking day-level transformational leadership behaviour with employees' daily level of stress. A first-stage moderated mediation framework consisting of team cooperation, role conflict, and type of daily communication is introduced to specify how and when leaders' transformational behaviour is related to followers' daily stress. Two hundred five participants took part in a diary study over five consecutive working days and provided information on their leaders' transformational behaviour, team cooperation, role conflict, type of communication with supervisors, as well as information on their daily level of stress. Results show that transformational leader behaviour is significantly related to followers' level of stress on a day-to-day basis. This relationship is mediated by team cooperation, but not by role conflict. The type of communication moderates this mediation framework. If only indirect means of communication are used, the negative indirect relation between transformational leader behaviour via team cooperation on daily stress is strengthened. The results are discussed in the context of leadership literature, and the implications for future research as well as practice are presented.