This study explored self efficacy and optimism as the predictors of organizational commitment among bank employees. The data was collected from 150 employees, which consisted of equal number of employees of private (n=75) and semi public sector (n=75) banks of Sargodha. The variables of the study were measured through Organizational Commitment Questionnaire (Mowday, Steers, & Porter, 1979), General Self Efficacy Scale (Schwarzer & Jerusalem, 1995) and Optimism Subscale of PsyCap Questionnaire (Luthans, Avolio, Avey, Norman, & Combs, 2006) respectively. Correlational analyses indicated that self efficacy was positively correlated with optimism and organizational commitment while the optimism and organizational commitment had no correlation. Multiple regressions revealed that self efficacy emerged as significant predictor while the optimism was not significant predictor of organizational commitment. Furthermore it was revealed that employees of private sector banks have higher level of organizational commitment than those of semi public sector banks. It was also explored that professionally qualified employees have higher level of organizational commitment than non-professionally qualified employees. Limitations of the study and suggestions for future research are also discussed.