Primary Legislation (Treaties)

The treaties constitute the European Union’s ‘primary legislation’, which is comparable to constitutional law at national level. They thus lay down the fundamental features of the Union, in particular the responsibilities of the various actors in the decision-making process, the legislative procedures, under the Community system and the powers conferred on them (©EUR-Lex, 2011).

The Treaty establishing the European Community and the various amending treaties are available online via:

• Europa website 
• EUR-Lex  

Access to the main Treaties via the EUI Library Catalogue:

Complete consolidated texts

• Treaty of Lisbon amending the Treaty on European Union and the Treaty establishing the European Community not in force  

• Treaty establishing a Constitution for Europe 

• Treaty on European Union (as amended by the Treaty of Amsterdam) 

• Treaty establishing the European Community (as amended by the Treaty of Amsterdam) 

• Treaty establishing the European Atomic Energy Community (Non-official consolidated version 1996 

Other related links

• Building Europe through the treaties  (Europa website)