This document provides an overview of organizational structures and management. It discusses organizational charts and how they show reporting lines and relationships between departments. Short chains of command allow for quicker communication and managers who are closer to subordinates. The roles of managers include planning, organizing, coordinating, commanding and controlling work. Delegation gives subordinates authority and experience while reducing the workload of managers. Effective managers motivate employees, provide guidance, inspire achievement and manage resources well. Leadership styles include autocratic, democratic and laissez-faire approaches. Trade unions represent workers' interests through collective bargaining and closed shops require membership.