The objectives of research are discussed as follows: (1) to understand and to analyze whether compensation and work motivation are influential simultaneously to employee performance at PT. Semen Indonesia (Persero) Tbk; (2) to understand and to analyze whether compensation and work motivation are influential partially to employee performance at PT. Semen Indonesia (Persero) Tbk; and (3) to understand and to analyze which one is from compensation and work motivation with the most dominant effect on employee performance at PT. Semen Indonesia (Persero) Tbk. Method of research is quantitative and the references are taken from Sugiyono, Simamora Triton Nugroho ,and Ridwan and Akdon). Result of research indicates that (1) compensation and work motivation are positively, significantly, and simultaneously influential to employee performance at PT. Semen Indonesia (Persero) Tbk; (2) compensation and work motivation are positively, significantly, and partially influential to employee performance at PT. Semen Indonesia (Persero) Tbk; and (3) work motivation has the dominant effect on employee performance at PT. Semen Indonesia (Persero) Tbk.