The relationship between environmentally sustainable development and company and business law has emerged in recent years as a matter of major concern for many scholars, policy-makers, businesses and nongovernmental organisations. This book offers a conceptual analysis of the principles of sustainable development and environmental integration in the EU legal system. It particularly focuses on Article 11 of the Treaty on the Functioning of the European Union (TFEU), which states that EU activities must integrate environmental protection requirements and emphasise the promotion of sustainable development. The book gives an overview of the role played by the environmental integration principle in EU law, both at the level of European legislation and at the level of Member State practice. Contributors to the volume identify and analyse the main legal issues related to the importance of Article 11 TFEU in various policy areas of EU law affecting European businesses, such as company law, insurance and state aid. In drawing together these strands the book sets out the requirements of environmental integration and examines its impact on the regulation of business in the EU. The book will be of great use and interest to students and researchers of business law, environment law, and EU law.