In today's era of competition, every company must develop and improve the performance of its employees. Many factors are involved in improving company performance. One of the important factors that the company must consider in achieving its goals is the human resource (HR) factor. This quantitative study involved as many as 140 staff of PT. PLN (Persero) UIP Sumbagut. The data was analyzed using descriptive and inferential statistics, including multiple linear regression. The result shows that competence and compensation significantly and negatively affect employee performance. Besides that, the workload significantly and positively affects employee performance. Also, this study found that compensation significantly and positively affects work motivation. In addition, the workload negatively and significantly affects work motivation. The motivation variable has a negative and significant effect on employee performance, and the competence variable negatively affects employee performance. Also, the compensation variable has a significant negative effect on employee performance. The workload Work motivation does not mediate the relationship between competence, compensation, and workload on employee performance. In conclusion, this study has examined the mediating role of motivation and found that its variable does not play a significant role in the relationship between competence, compensation, and workload on employee performance.