This document discusses concepts and skills related to modern supervision. It provides definitions of supervisor and supervision, noting that supervisors are the first level of management and oversee non-managerial employees. It also outlines types of supervisory skills including technical, human relations, conceptual, and decision-making skills. The document discusses functions of supervision including planning, organizing, staffing, leading, and controlling. It lists responsibilities of supervisors and characteristics of successful supervisors such as having a positive attitude and being fair.