Human resource management (HRM) involves planning, implementing, and managing various human resource functions within an organization, including recruitment, selection, training, career development, and more. The scope of HRM includes ensuring personnel needs are met, managing employee welfare, and handling industrial relations. HRM aims to make optimal use of human resources to foster individual development and comply with legal mandates. Key HRM roles include staffing the organization, recruiting and training employees, managing performance, and ensuring compliance with regulations. As a management discipline, HRM incorporates theories from psychology, sociology, and biology but often relies on simplistic models that do not fully capture the complex constraints of human behavior within organizations.