The European Union is the biggest market in the world. It is also the most advanced example of regional integration based on economy. The course aims at giving students a good understanding of the mechanisms of the European Union internal market, highlighting the regulatory framework. Understanding the law principles governing private and business relations and transactions, including corporate crimes committed in the exclusive interest of legal entities, is key to understand the economic context in which individuals and firms operate in the EU. In the light of the above, the course aims at giving an insight into European business law and will particularly focus on internal market, competition law and company law of the EU; at the same time the course aims to provide a knowledge of the general framework within the European Union Member States of the system of liability of private and public law bodies for offences committed by their top management and directors when they act in the course of their duties and in the exclusive interest of the company or public service. This course does not study the historical and political aspects of the European Union integration, although these aspects remain slightly present in the study of the EU regulatory framework.