The study explores the relationship of the Big-Five personality traits with affective commitment among the public sector employees. Personality is an important antecedent of employee commitment with the organization. Self-administered questionnaire assessing personality traits and affective commitment was collected from 150 managerial level of employee and academic level of the public sector employees. The collected data were analyzed using descriptive analysis and correlation analysis. The results of the study indicated that extraversion, conscientiousness and agreeableness traits were significantly correlated with affective commitment. Results on neuroticism and openness to experience traits did not show significant relationship. The findings of the study add to the body of knowledge in the refinement of organizational commitment models from dispositional perspective