This book deals with the practice of enforcement. It focuses on the position of enforcement professionals: inspectors attempting to induce inspectees to adopt norm-compliant behaviour. What strategies do inspectees use to evade rules and enforcement? How do inspectors respond? What are 'counter-strategies´? In addition to this game between inspectors and inspectees, there is the game between inspectors, managers and politicians. What influence do politicians and managers have on inspectors and what patterns do we see developing in this relationship? The book also covers a number of themes surrounding enforcement: zero tolerance, information-sharing between inspectors, regulation in network-based sectors and the meaning of several types of risks in risk analyses. The book discusses the reality of professionals rather than policy and policy plans. It is highly suitable for those who want to understand the reality of enforcement, such as policy makers, inspectors, regulators, enforcement organizations and educational institutions, but also for those facing an enforcing government.