The Influence of Transformational Leadership on Organizational Citizenship Behavior Through the Mediating Role of Organizational Culture and Organizational Commitment: A Study on Nurses at Inche Abdoel Moeis Regional Hospital, Samarinda

ABSTRACT: This quantitative study examines the influence of transformational leadership on organizational citizenship behavior (OCB) mediated by organizational culture and organizational commitment among nurses at Inche Abdoel Moeis Regional Hospital, Samarinda. A total of 155 respondents were selected through purposive sampling based on professional tenure, certification, and organizational participation. Data were analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM), which enables simultaneous analysis of complex relationships among latent variables. The findings reveal that transformational leadership significantly enhances organizational culture and organizational commitment, and both mediators jointly strengthen OCB. Furthermore, organizational culture and organizational commitment independently exert significant positive effects on OCB, confirming dual-mediated pathways. These findings underscore the strategic importance of leadership styles that emphasize vision, motivation, innovation, moral influence, and employee empowerment within healthcare institutions. The study contributes theoretically by validating dual-mediation effects within a healthcare context in Indonesia, and practically by offering recommendations to hospital governance in improving professional citizenship behavior.

KEYWORDS: Transformational Leadership; Organizational Culture; Organizational Commitment; Organizational Citizenship Behavior; Nursing Profession.