A supervisor is responsible for overseeing employee performance and directly managing workers. Their key functions include converting goals into products/services, controlling worker performance, recommending promotions, arranging tools/materials, and providing technical guidance. To be effective, supervisors must win worker confidence, issue work orders, arrange training, act as a model, ensure discipline and prescribe work. They also communicate with management about progress, problems, and ensure work aligns with management desires. Effective supervision requires achieving objectives, analyzing the group to decide on actions, and fulfilling group needs.