Maintaining employees’ commitment to their workplace is a major challenge faced by many organizations. This study examines the impact of perceived organizational support (POS) on different dimensions of organizational commitment among medical doctors working in healthcare organizations in Pakistan. It also compares the level of POS and organizational commitment between doctors working in the public and private sectors. Based on a 32-item questionnaire administered to a sample of 160 respondents working at two private and two public hospitals, we find a significant, positive relationship between POS and affective as well as normative commitment, and an insignificant relationship between POS and continuance commitment. This suggests that the management should take measures to increase organizational support among employees in order to raise their level of organizational commitment.