Human resource management involves managing people in work organizations and setting strategies, goals, work systems, and policies to maximize productivity, quality, and profitability. It is both an art and a science, drawing from fields like psychology and applying managerial functions like planning, organizing, and controlling. Key aspects of HRM include assessing staffing needs, fulfilling needs through recruitment and policies, improving staff services, and influencing organizational structure, resources, and control through communication of values and both formal and informal behaviors. The most effective approach to management recognizes it as both an art and a science involving both political behaviors and control.