This document provides an overview of human resource management. It discusses the definition and functional areas of HRM, including job analysis, human resource planning, recruitment, compensation and benefits, downsizing, and human resource development. It describes the protagonists that perform HRM tasks and how the organization of HRM varies depending on company size, from small to large firms. The document also reviews how HRM is impacted by its internal and external environment and provides some insights on trends in HRM.