-Frederick Taylor: scientific management
-Frank and Lillian Gilbreth (1910-1924)
-Time and motion studies to eliminate waste in productivity
-Luther Gulick and Lyndall Urwick (1937)
-PODSCORB (planning, organizing, directing, staffing, coordinating, reporting, and budgeting)
-Henri Fayol's "14 principles of management" (1916):
-Division of work, authority, discipline, unity of command, unity of direction, subordination of individual to common interest, remuneration of personnel, centralization, scalar chain, hierarchal structure, order, equity, stability of personnel, initiative, and espirit de corps