This study aims to examine the effect of job satisfaction and work motivation on employee performance at the National Regional Infrastructure Development Center, South Jakarta. The research employed a quantitative associative method with a population consisting of all employees, and a total sample of 55 respondents. Data analysis was conducted using simple and multiple linear regression, correlation coefficient, coefficient of determination, partial t-tests, and the F-test. The results indicate that job satisfaction has a positive and statistically significant effect on employee performance with a correlation coefficient of 0.790, and a t-value of 7.952 > 2.005 with a significance level of 0.001 < 0.05. Work motivation also shows a positive and statistically significant effect on employee performance, with a correlation coefficient of 0.773, a coefficient of determination of 77.3%, and a t-value of 8.800 > 2.005 with a significance value of 0.001 < 0.05. Simultaneously, job satisfaction and work motivation significantly influence employee performance, as indicated by an F-value of 43.278 > 3.18 with a significance level of 0.001 < 0.05. The coefficient of determination demonstrates that 79% of the variation in employee performance is explained by job satisfaction and work motivation, while the remaining 21% is influenced by other factors not examined in this study.
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