In the preceding research on the effect of leader integrity, it has been verified that the influence of perceived leader integrity on subordinates’ work morale is mediated by their organizational commitment (Shi & Ura, 2001; Shi, Ura, Shi, & Tao, 2002). However, in that influence process, the interaction mechanism between the integrity of leader and the organizational commitment of the subordinates is unclear. In the present study, an integrative model on the influence process of leader integrity was proposed by approaching from the viewpoint of social exchange, and validity of this model was tested with structural equation model (SEM). 384 Japanese company employees completed some questionnaires measuring the leader integrity, organizational commitment, work morale, subordinate trust in leader, leader-member exchange (LMX), perceived organizational support (POS), organizational citizenship behavior (OCB), and the others. Results showed that validity of the proposed leader