This study was conducted to improve employee performance at PT. Ivo Mas Tunggal PKS Libo Kandis District, Siak Regancy. The perpose of this study was to determine the effect of reward and punishment on employee perfgormance through the intervening variable of work motivation at PT. Ivo Mas Tunggal PKS Libo Kandis District, Siak Regancy. This study uses a quantitative research type. Data collect…