This document summarizes several influential management theories: 1) Frederick Taylor's scientific management theory focused on analyzing workflows to increase economic efficiency through principles like scientific selection of workers and splitting work into equal tasks. 2) Henri Fayol identified 6 primary management functions: forecasting, planning, organizing, commanding, coordinating, and controlling. 3) Max Weber's theory proposed bureaucratic management with organizational hierarchies, standard operating procedures, and clear lines of authority and control. 4) The Hawthorne studies found that social factors like attention from managers can increase worker productivity, challenging the view that people act purely rationally and economically.