This study aims to examine the mediating role of job satisfaction in the relationship between organizational culture, work motivation, and transformational leadership regarding the performance of production staff at PT Laksana Bus Manufaktur. Employing a quantitative approach, data were collected via questionnaires distributed to a sample of 292 production employees selected through purposive sampling. Statistical analysis was conducted using Structural Equation Modeling-Partial Least Squares (SEM-PLS) with SmartPLS 4 software. The results confirm that organizational culture, work motivation, and transformational leadership exert positive and significant influences—both directly on job satisfaction and employee performance, and indirectly through the mediating variable. Furthermore, these findings reinforce Social Exchange Theory and offer practical implications for manufacturing management in designing comprehensive human resource strategies to enhance productivity.
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