The book presents the results of the first comprehensive empirical study on the control of minimum wages in Germany. It offers an overview of the challenges and problems of enforcement and compliance with minimum wages, taking three sectors as examples (construction, meat industry, hospitality). On the basis of numerous interviews with experts from the field (e.g. trade unions, employers'' associations, customs) and a comprehensive evaluation of the broad international research literature, it identifies starting points and strategies for sustainably improving compliance with and enforcement of minimum wages.