Employee performance is the work achieved by a person or group of people in accordance with the authority or responsibility of each employee during a specific period. Many factors affect employee performance, including job satisfaction and motivation. Job satisfaction reflects one's feelings toward his work. Motivation is a management action to encourage employees to improve their careers through performance. Performance assessments aim to assess employee performance. This research is quantitative research with correlational approach which aims to analyze and test the causal relationship between aims to know the influence of motivation, compensation and competence to employee performance. The population in this research is all employees in PT. PLN (Persero) Power Plant North Sumatera subsidiary, totaling 142 employees. Sample determination using Slovin formula resulted in 59 research samples. Data collection method uses questionnaire, documentation study and interview while data analysis uses multiple linier regression consisting of F test simultaneously and partial t test. The results showed that job satisfaction and motivation simultaneously had a significant effect on employee performance. Partially, motivation has a significant effect on employee performance. The influence of job satisfaction and motivation on employee performance is 63.1%. To PT PLN (Persero) Power Plant North Sumatera, subsidiary, it is advisable to pay attention to aspect that can improve employee performance such as job satisfaction and work motivation to employee performance can be improved. To PT. PLN (Persero) Power Plant North Sumatera subsidiary is advised to further improve its performance according to motivation, provided without waiting for a recommendation from the leader so that personal performance can be further enhanced.

Paper Link: http://ijsab.com/volume-3-issue-2/1779