This study aims to examine the effect of transformational leadership on employee performance at PT. Yamata Machinery through organizational commitment. The research method used is a quantitative approach with probability sampling through a simple random sampling technique. The data analysis techniques used were path analysis and the Sobel test to examine the mediating role. The results show that: 1) Transformational leadership has a positive and significant effect on employee performance; 2) Transformational leadership also has a positive and significant effect on organizational commitment; 3) Organizational commitment has a positive and significant effect on employee performance; 4) Organizational commitment is not proven to mediate the effect of transformational leadership on employee performance.
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