This document provides an overview of key concepts in human resource management. It discusses the primary functions of management as planning, organizing, leading, and controlling. It then explains that HRM is important for an organization because the role of HR managers has expanded, legislation places new requirements on employers, jobs have become more technical, and global competition demands increased productivity. The rest of the document outlines the main functions of HRM like staffing, training, motivation, and maintenance as well as how external factors influence HRM.