This document discusses the organization and theories of bureaucracy. It begins by defining bureaucracy and exploring Max Weber's view of bureaucracy as a rational model of administration. It then examines three main theories of bureaucracy: the liberal/rational administrative model, the conservative/power bloc model, and the New Right/government oversupply model. The document also outlines the typical organization of a government bureaucracy, including departments, divisions, and non-departmental public bodies like regulatory agencies. Overall, the document provides an overview of the nature, concepts, structure, and theories related to public sector bureaucracy.