The document traces the evolution of organization theories from classical to integrative approaches. It discusses early theorists like Taylor who promoted scientific management and Gulick who developed the POSDCORB framework. It then outlines criticisms by Simon, Waldo and Appleby and the introduction of new concepts like cooptation by Selznick. The document also discusses contributions by other key figures like Follett, Mayo, Barnard, Maslow and their development of theories around human relations, organizational behavior, motivation and management.