This study’s primary purpose is to explore the psychological capital roles and personality traits of Big-Five in predicting OCB (organizational citizenship behavior) and performance of task in Indonesia’s electricity sector. The data were gathered from the employees of four major cities in Indonesia, in Southeast Sulawesi, comprising 246 employees. The data were analyzed utilizing a PLS (partial least squares) based SEM (structural equation modeling) technique. The findings indicate that the psychological capital and personality traits of Big-Five relate significantly to OCB and the performance of task. Nevertheless, against our expectations, OCB does not significantly relate to the performance of task. This study also discusses the findings’ further implications. In terms of practical implications, the findings of this research stipulate that psychological capital and Big-Five personality traits aimed to improve employee performance and can be most effective if specifically targeted at OCB. Given that both variables play an important role to promote OCB, caring training initiatives that focus on mutual help can be very valuable for organizational improvement. In a managerial perspective, organizations can increase OCB by conducting open communication strategies between managers and employees to further stimulate and strengthen the ability of employees to display extra-role behaviors.

Abstract
1. Introduction
2. Literature Review
    2.1. OCB (Organizational Citizenship Behavior)
    2.2. Psychological Capital
    2.3. Personality Traits of Big-Five
3. Research Methodology
    3.1. Sample and Data Collection
    3.2. Measurement
    3.3. Structural Equation Modeling and PartialLeast Squares
4. Results
5. Discussion
6. Conclusion
References

• Udin UDIN(Business and Economic Faculty, Universitas Muhammadiyah Yogyakarta) Corresponding Author
• Ahyar YUNIAWAN(Business and Economic Faculty, Universitas Diponegoro)