This research aims to determine the effect of work fatigue and occupational safety and health (K3) on the productivity of employees in the Afdeling I PT. The population in this study were all employees of the plantation section of AFDELING I PT. Inti Indosawit Subur, Pelelawan Regency, totaling 107 people. The sample technique was taken using the Hair formula, namely the number of indicators is…