This study investigates the relationship between rewards and organizational commitment (OC) of 9,826 Malay employees who work for 32 Japanese companies in Malaysia focusing on the difference between men and women. The result showed that delegation-related rewards (i.e. satisfaction with personnel evaluation and autonomy) had stronger influence on OC in male than in female employees. On the other hand, other delegation-free rewards (i.e. satisfaction with other treatments, fatigue, supervisor/co-worker support, training provision and role clarity) were equally related with OC for both genders. Discussions and implications concerning diversity and human resource management in the corporations in Malaysia are offered.