This study aims to determine the effect of work discipline, organizational commitment, job satisfaction and organizational culture on employee performance at PT. Haitwo Anugerah Nibras Indonesia. Population of this study are 215 employees. The samples in this study are 150 employees using the saturated sample technique. The analysis method used are F test, t test and adjusted R2 . The results of this study based on the f test shows that work discipline, organizational commitment, job satisfaction and organizational culture simultaneously affect mployee performance. (a) Work Discipline has a positive and significant effects on employee performance. (b) Organizational Commitment has a positive and significant effects on employee performance. (c) Job Satisfaction (d) Organizational Culture has a positive and significant effects on employee performance. Based on the determination coefficient test of adjusted R2 shows that magnitudes of the influence of Work Discipline, Organizational Commitment, Job Satisfaction and Organizational Culture on employee performance by 51.7%, while the remaining 48.3% are influenced by variables outside the research model.