Rules affect all areas of governmental and public life, helping to shape policy-making, regulate,and enforce the law, particularly in the environmental and health and safety factors.This book is the first comprehensive study of the use of non-statutory rules in government. When should government be carried out with rules? What are the alternatives to governing with rules, and are they part of 'good' governmental processes? These issues lie at the heart of this book, which focuses on non-statutory rules - such as codes or circulars - their potential and their limitations. It examines how rule-use can be assessed, the success of rule-use and how choices can be made between rules and alternative processes in governmental functions, the design and enforcement of rules, the role of economic analysis in rulemaking, and the particular problems of governing with rules within the European Community. It will appeal to academics, practitioners in regularity sectors and agencies where enforcement is an issue, and civil service and private sector personnel who respond daily to rules and regulations.