The document discusses the structure of human resource departments in organizations. It provides examples of HR department structures for small organizations, large organizations, and Amazon specifically. For small organizations, the HR department typically has a director and managers for areas like training, administration, and labor relations. Large organizations have a more hierarchical structure headed by a vice president of HR, with separate managers for areas such as labor relations, training, safety, recruitment, and compensation. The summary describes the key roles and departments within Amazon's HR structure.