The Agreement on the European Economic Area, which entered into force on 1 January 1994, brings together the EU Member States and the three EEA EFTA States — Iceland, Liechtenstein and Norway — in a single market, referred to as the "Internal Market".
The EEA Agreement also states that when a country becomes a member of the European Union, it shall also apply to become party to the EEA Agreement (Article 128), thus leading to an enlargement of the EEA.
The EEA Agreement provides for the inclusion of EU legislation covering the four freedoms — the free movement of goods, services, persons and capital — throughout the 31 EEA States. In addition, the Agreement covers cooperation in other important areas such as research and development, education, social policy, the environment, consumer protection, tourism and culture, collectively known as “flanking and horizontal” policies. The Agreement guarantees equal rights and obligations within the Internal Market for citizens and economic operators in the EEA.
The EEA Agreement does not cover the following EU policies:
Switzerland is not part of the EEA Agreement, but has a bilateral agreement with the EU. You can read more about this agreement on the European Commission website, and on the Swiss Federal Administration website.