The European Parliament: organisation and operation  

The organisation and operation of the European Parliament are governed by its Rules of Procedure. The political bodies, committees, delegations and political groups guide Parliament’s activities.

Legal basis  

  • Article 14 of the Treaty on European Union (TEU) and Articles 223, 224, 226, 229, 231 and 232 of the Treaty on the Functioning of the European Union (TFEU);
  • Rules of Procedure of the European Parliament.

Membership and composition  

On a proposal by Parliament[1], the European Council adopted Decision 2013/312/EU on the composition of the European Parliament after the elections in 2014. Consequently, the European Parliament now has 751 Members, distributed among the Member States as follows: Germany — 96; France — 74; Italy and the United Kingdom — 73; Spain — 54; Poland — 51; Romania — 32; the Netherlands — 26; Belgium, Greece, Hungary, Portugal and the Czech Republic — 21; Sweden — 20; Austria — 18; Bulgaria — 17; Finland, Denmark and Slovakia — 13; Croatia, Ireland and Lithuania — 11; Latvia and Slovenia — 8; Cyprus, Estonia, Luxembourg and Malta — 6.

Decision 2013/312/EU applies a ‘principle of degressive proportionality’, as provided for in the first subparagraph of Article 14(2) TEU. This means that the total number of seats (currently 751) are allocated according to Member State population size, but more populous Member States agree to be under-represented in order to favour greater representation of less populous EU countries.

The United Kingdom’s withdrawal from the EU would free up 73 seats, reducing the total size of Parliament. On 29 March 2019, when the two-year timeframe for the negotiation and conclusion of a withdrawal agreement ends (unless the European Council, in agreement with the UK, unanimously decides to extend that period under Article 50(2) TEU), and the UK ceases to be a member of the EU, its 73 seats will fall away (1.3.4). One idea that was discussed was for Parliament to hold some of its seats in reserve for MEPs representing pan-European constituencies taken from transnational lists, but the proposal was rejected by Parliament in its resolution of 7 February 2018[2]. Instead, in order to fully uphold the principle of degressive proportionality, the number of seats for some Member States will be increased slightly, and the total number of seats will be cut from 751 to 705 after the UK leaves the EU – which might happen before the elections of May 2019.

After every election, Parliament shall meet, without requiring to be convened, on the first Tuesday after expiry of an interval of one month (Act of 20 September 1976[3]). In accordance with Article 229(1) TFEU, Parliament shall also meet, without requiring to be convened, on the second Tuesday in March each year.


A. The President

The President of Parliament (Rule 22) is elected for a renewable term of two and a half years (Rule 19) from among the Members of Parliament. The President represents the institution vis-à-vis the outside world and in its relations with the other EU institutions. The President oversees the debates in plenary and ensures that Parliament’s Rules of Procedure are adhered to. At the beginning of every European Council meeting, the President of the European Parliament sets out Parliament’s point of view and its concerns as regards the items on the agenda and other subjects. After the European Union’s budget has been adopted by Parliament, the President signs it, rendering it operational. The Presidents of both Parliament and the Council sign all legislative acts adopted under the ordinary legislative procedure. The President can be replaced by one of the 14 Vice-Presidents (Rule 23).

B. The plenary

The plenary is the European Parliament sensu stricto and its sittings are chaired by the President. It meets in plenary session in Strasbourg every month (except August), for a ‘part-session’ lasting four days from Monday to Thursday. Additional part-sessions are held in Brussels. The part-session is divided into daily sittings (Rule 145(3)). The places assigned to Members in the Chamber are decided by political affiliation, from left to right, by agreement with the group chairs. The President opens the sitting, sometimes with a tribute or a speech on a current topic. The President is assisted in this task by the 14 Vice-Presidents, who may take over the chair. The European Commission and the Council of the European Union take part in the sittings in order to facilitate cooperation between the institutions in the decision-making process. If Parliament so requests, the representatives of the two institutions may also be called upon to make declarations or to give an account of their activities.

C. Political bodies

Parliament’s political bodies comprise the Bureau (Rule 24 — the President and 14 Vice-Presidents); the Conference of Presidents (Rule 26 — the President and the political group chairs); the five Quaestors (Rule 28 — responsible for Members’ administrative and financial business); the Conference of Committee Chairs (Rule 29); and the Conference of Delegation Chairs (Rule 30). The term of office of the President, the Vice-Presidents and the Quaestors, as well as of the committee and delegation chairs, is two and a half years (Rule 19).

D. Committees and delegations

Members sit on 20 committees, two subcommittees and 39 delegations (interparliamentary delegations and delegations to joint parliamentary committees, parliamentary cooperation committees, and multilateral parliamentary assemblies)[4]. Parliament also sends a delegation to the Joint Assembly set up under the agreement between the African, Caribbean and Pacific (ACP) states and the EU[5]. Parliament may also establish special committees (Rule 197) or committees of inquiry (Article 226 TFEU and Rule 198).

On the basis of Rule 204, each committee or delegation elects its own Bureau, consisting of a chair and up to four vice-chairs.

E. Political groups

Members do not sit in national delegations, but according to their political affinities in transnational groups. Under the Rules of Procedure, a political group must comprise Members elected from at least one quarter of the Member States and must consist of at least 25 Members (Rule 32). The political groups hold regular meetings during the week before the part-session and in part-session weeks, as well as seminars to determine the main principles of their activity. Certain political groups correspond to supranational political parties operating at EU level.

F. European political parties and foundations

The European Parliament recommends the creation of an environment favourable to the continued development of European political parties and foundations, including the adoption of framework legislation. Article 224 TFEU provides a legal basis for the adoption, in accordance with the ordinary legislative procedure, of a statute for European-level political parties and of rules on their funding. Most political parties are founded on the basis of Regulation (EU, Euratom) No 1141/2014 of the European Parliament and of the Council of 22 October 2014 on the statute and funding of European political parties and European political foundations, which also provides for the possibility of funding political foundations that support the respective parties through educational and research activities.

The European parties currently in existence are: the European People’s Party (EPP), the Party of European Socialists (PES), the Alliance of Liberals and Democrats for Europe Party (ALDE), the European Green Party (EGP), the Alliance of Conservatives and Reformists in Europe (ACRE), the Party of the European Left (EL), Europeans United for Democracy (EUD), the European Democratic Party (EDP), the European Free Alliance (EFA), the European Alliance for Freedom (EAF), the Alliance of European National Movements (AEMN), the European Christian Political Movement (ECPM), and the Alliance for Direct Democracy in Europe (ADDE). Supranational parties work in close cooperation with the corresponding political groups in the European Parliament.

Some of the most important European political foundations include: the Wilfried Martens Centre for European Studies, the Foundation for European Progressive Studies, the European Liberal Forum, the Green European Foundation, the Institute of European Democrats, Transform Europe, and New Direction – The Foundation for European Reform.

G. Parliament’s Secretariat

The Secretariat of the European Parliament is headed by the Secretary-General, who is appointed by the Bureau (Rule 222). The Secretariat’s composition and organisation is also determined by the Bureau: it currently comprises 12 Directorates-General and the Legal Service. Its task is to coordinate legislative work and organise the plenary sittings and meetings. It also provides technical, legal and expert assistance to parliamentary bodies and MEPs to support them in the exercise of their mandates. The Secretariat provides interpretation and translation for all meetings and formal documents.


Under the Treaty, Parliament organises its work independently. It adopts its Rules of Procedure, acting by a majority of its component Members (Article 232 TFEU). Except where the Treaties provide otherwise, Parliament acts by a majority of votes cast (Article 231 TFEU). It decides the agenda for its part-sessions, which primarily cover the adoption of reports prepared by its committees, questions to the Commission and Council, topical and urgent debates, and statements by the Presidency. Committee meetings and plenary sittings are held in public and are webstreamed.

Seat and places of work  

From 7 July 1981 onwards, Parliament has adopted several resolutions on its seat, calling on the governments of the Member States to comply with the obligation incumbent upon them under the Treaties to establish a single seat for the institutions. Since they failed for a long time to do so, Parliament took a series of decisions concerning its organisation and its places of work (i.e. Luxembourg, Strasbourg and Brussels). At the Edinburgh European Council of 11 and 12 December 1992, the Member States’ governments reached an agreement on the seats of the institutions, whereby:

  • Parliament should have its seat in Strasbourg, where the 12 monthly part-sessions, including the session at which the decision on the annual EU budget is taken, should be held;
  • Additional part-sessions should be held in Brussels;
  • The parliamentary committees should meet in Brussels;
  • Parliament’s secretariat and back-up departments should remain in Luxembourg.

This decision was criticised by Parliament. However, the Court of Justice (judgment of 1 October 1997 — C-345/95) confirmed that the seat of Parliament was determined in accordance with what is now Article 341 TFEU. The substance of this decision was included in the Treaty of Amsterdam in a protocol annexed to the Treaties.

Although Parliament regretted these decisions, it has been obliged to draw up its annual calendar accordingly on a proposal by its Conference of Presidents. In general, in the course of a year, Parliament holds 12 four-day part-sessions in Strasbourg and six two-day part-sessions in Brussels. Several initiatives have been launched by Members to avoid meeting in Strasbourg. For 2012, for example, a calendar was adopted which included two two-day part-sessions during the same calendar week in October in Strasbourg, reducing the overall meeting time in Strasbourg by four days. Following a complaint by France, however, the Court of Justice ruled that two full part-sessions are required (Case C-237/11) to comply with the decisions taken.

Pursuant to Article 229 TFEU, Parliament may hold extraordinary part-sessions, at the request of a majority of its component Members or at the request of the Council or the Commission. On 18 December 2006, Parliament held, for the first time, a supplementary plenary sitting in Brussels directly after the European Council of 14 and 15 December 2006. This practice of immediate follow-up of European Council meetings has since then been consolidated.

Membership of Parliament by group and Member State  

A table offering an overview of the political groups and their composition may be found under the following link:


[1]European Parliament resolution of 13 March 2013 on the composition of the European Parliament with a view to the 2014 elections (Texts adopted, P7_TA(2013)0082). 
[2]European Parliament resolution of 7 February 2018 on the composition of the European Parliament (Texts adopted, P8_TA(2018)0029). 
[3]Act concerning the election of the representatives of the Assembly by direct universal suffrage of 20 September 1976, OJ L 278, 8.10.1976. 
[4]Numbers of members per committee are laid down in paragraph 1 of European Parliament decision of 2 July 2014 on numerical strength of the committees (Texts adopted, P8_TA(2014)0001). 
[5]See Cotonou Agreement as revised in Ouagadougou on 22 June 2010, Article 17. 

Udo Bux