This paper explores, through empirical analysis, how various aspects of Organizational Citizenship Behavior (OCB) shape Supply Chain Performance (SCP) and, consequently, Corporate Sustainability (CS). Drawing upon Social Exchange Theory, a theoretical model is developed to explain how six OCB components—Civic Virtue, Organizational Loyalty, Courtesy, Helping Behavior, Sportsmanship, and Conscientiousness—affect SCP and indirectly contribute to CS outcomes. Using data from 441 professionals engaged in supply chain operations across multiple sectors, gathered via snowball sampling, the study applies Partial Least Squares Structural Equation Modeling (PLS-SEM) through SmartPLS 3.3.6. The analysis indicates that each OCB dimension exerts a meaningful and positive impact on SCP. Specifically, Civic Virtue, Loyalty, and Courtesy enhance cooperation and performance efficiency, Helping Behavior and Sportsmanship promote a collaborative atmosphere, while Conscientiousness reinforces procedural consistency. Additionally, SCP is found to significantly advance CS, confirming its intermediary function between OCB and sustainability success. These findings emphasize that cultivating OCB traits within organizations can strategically strengthen SCP and foster sustainable corporate development. The research enriches the literature with new empirical evidence on the interplay between OCB, SCP, and CS—an area seldom addressed in earlier studies.
