This study aims to determine the effect of motivation, work environment, commitment directly and indirectly on employee performance and job satisfaction as an intervening variable, and the effect of employee performance on job satisfaction at PT. Port of Indonesia Region IV Makassar. This study used a sampling method from a total population of 170 and which returned only 145 responses. and the data got from the results were analyzed using Structural Equation Modeling (SEM) Applications. The results showed that motivation, work environment, and commitment, all three had a positive and significant effect on job satisfaction, while motivation and commitment had a positive and significant effect on employee performance, but the work environment had a positive but not significant effect on employee performance. While using job satisfaction as an intervening, the results got from the three have a positive and significant effect on employee performance, with job satisfaction as the intervening variable. Keywords: motivation, work environment, commitment, employee performance, job satisfaction, PT. Port of Indonesia Region IV Makassar.