The document discusses the development of management thought from classical to modern approaches. It describes: 1) Early management approaches like bureaucracy and scientific management that focused on structure, rules and efficiency. 2) Neo-classical approaches emerged like Hawthorne experiments highlighting the social aspects of work. 3) Later, behavioral science looked at fulfilling human needs through work while systems approach analyzed organizations. 4) The contingency approach advocated situational flexibility over rigid principles given changing environments. The best solution depends on properly analyzing each unique situation.