EU Law
Introduction
– EC Library Guide
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Introduction
EU law
The European Union is based on the rule of law. This means that every action taken by the EU is founded on treaties that have been approved voluntarily and democratically by all EU member countries. For example, if a policy area is not cited in a treaty, the Commission cannot propose a law in that area.
A treaty is a binding agreement between EU member countries. It sets out EU objectives, rules for EU institutions, how decisions are made and the relationship between the EU and its member countries.
Treaties are amended to make the EU more efficient and transparent, to prepare for new member countries and to introduce new areas of cooperation – such as the single currency.
Under the treaties, EU institutions can adopt legislation, which the member countries then implement. The complete texts of treaties, legislation, case law and legislative proposals can be viewed using the EUR-Lex database of EU law.
Source: European Union
About this Library Guide
This Library Guide has been compiled to support the work of the European Commission. It may also be of interest to students, researchers and the wider public.
The Library Guide presents a curated selection of relevant sources on the topic: EU websites, EU publications, EU databases, legal literature, research journals, books and news updates.
Use the Find-eR search box on the left to discover information sources on other topics that matter to you.
The resources listed in the EC Library Guides do not necessarily represent the positions, policies or opinions of the EU institutions and bodies.
- Last Updated: Oct 21, 2025 6:12 PM
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