The qualifications needed to work in a paper mill depend on your responsibilities. To be a mill operator, you need to have a high school diploma or GED certificate, as well as job training under more experienced machine operators. You also need excellent mechanical and technical problem-solving skills. Managers typically have several years of experience working in a mill, including at least a year in a supervisory position. Quality control workers need to have a strong grasp of the technical specifications of the materials and paper goods they inspect and knowledge of regulatory compliance. Service technicians need mechanical training and strong computer skills.