The Assembly & Executive

The Assembly and the Executive Committee activity link

What is the difference between the Assembly and the Executive?

The Assembly is the legislature, or law-making body for Northern Ireland, made up of 90 Members of the Legislative Assembly (MLAs), elected by the people to represent their views and make laws on their behalf. It meets in the Assembly Chamber of Parliament Buildings, in the grounds of the Stormont Estate in Belfast. All laws on Transferred Matters must be passed by the Assembly. It debates and scrutinises proposals for laws, suggests amendments and votes on whether they should become laws. Proposals for new laws are called Bills. When they have been passed by the Assembly and have received Royal Assent, they become Acts. The Assembly passed 46 laws in the 2017 - 2022 mandate. (The Assembly was operational between January 2020 and March 2022). Most proposals for laws come from Executive Committee Ministers and are known as Executive Bills. Non-Executive Bills are those proposed by an MLA (Private Member's Bill) or an Assembly Committee (Committee Bill).

The Executive Committee – or ‘Executive’ – is the Government of Northern Ireland. Made up of Ministers in charge of government departments, it runs Northern Ireland and is responsible for delivering all our public services, such as health and education. There are 9 Northern Ireland Departments. At the start of each mandate (5 year term), the Executive drafts a Programme for Government (PfG) and associated Budget, which have to be scrutinised and approved by the Assembly. The Executive then works with the Assembly towards completing the Programme for Government before the next election.

Unlike the Westminster system, where one party can govern alone (controlling all government departments) if they win a majority of seats in the House of Commons and the leader of that party becomes the Prime Minister, the Northern Ireland Executive must be a coalition government of at least two parties, representing unionists and nationalists. We have two people sharing the role of 'prime minister',  the First Minister and the deputy First Minister. Following an election, the largest party nominates the First Minister and the largest party in the second largest community nominates the deputy First Minister. A system, called 'd'Hondt' is then used to appoint the other ministers on the Executive. This mathematical formula is based on party strength in the Assembly, that is, the number of seats parties have won in the election. So, the largest party gets 'first pick' of the departments and nominates one of their MLAs to be Minister of that Department. The d'Hondt formula is then applied to reduce that party's 'value' (no of seats divided by two after the first pick), and the largest party at that point gets second of departments and nominates the minister. The process continues until all positions are filled. Larger parties may get to nominate more than one Minister. A special arrangement is in place to appoint the Minister for Justice, who has to be elected by the Assembly with cross-community support, ie, the support of both nationalists and unionists.

See below for a list of the Northern Ireland government departments and their current ministers. The departments are listed in the order that they were selected by parties under d'Hondt, which is run following the nomination of the First Minister and deputy First Minister and the election of the Justice Minister. D'Hondt ensures that ministerial positions are allocated to parties on the basis of their success in the election.

As a result of the May 2022 election, there were lots of 'firsts'. Sinn Féin became the biggest party in the Assembly for the first time and the first nationalist party to nominate the First Minister. Michelle O'Neill MLA was nominated to this position. The Alliance Party increased its representation from 8 to 17 seats, which meant that the party was entitled to a ministerial position under D'Hondt, for the first time, although the party had previously held the Justice ministry, having been elected to do so, with cross-community support.  The SDLP,  with 8 seats (down from 12), was not entitled to a seat on the Executive for the first time since the Assembly was established. Having met the requirement of having at least 8% share of votes in the election, the party chose to be recognised as the official 'Opposition' and nominated Matthew O'Toole MLA as Leader of the Opposition. 

Departments and ministers appointed 3 February 2024

  • The Executive Office - First Minister, Michelle O'Neill MLA, Sinn Féin (SF) and deputy First Minister, Emma Little-Pengelly MLA, Democratic Unionist Party (DUP)
  • Department of Justice - Naomi Long MLA, Alliance Party (AP) (elected with cross-community support)
  • Department for the Economy - Conor Murphy MLA** (SF)
  • Department of Education - Paul Givan MLA (DUP)
  • Department of Finance - Caoimhe Archibald MLA** (SF)
  • Department for Communities - Gordon Lyons MLA (DUP)
  • Department of Health - Robin Swann MLA*, Ulster Unionist Party
  • Department for Infrastructure - John O'Dowd MLA** (SF)
  • Department of Agriculture, Environment and Rural Affairs - Andrew Muir MLA (AP)

*Robin Swann MLA was replaced by Mike Nesbitt MLA on the 28th May 2024

** On 3 February 2025 Conor Murphy was replaced by Caoimhe Archibald, John O'Dowd moved from Infrastructure to Finance and Liz Kimmons was appointed as Minister for Infrastructure. 

Junior ministers appointed to the Executive Office are Aisling Reilly MLA SF) and Pam Cameron MLA (DUP). 

The Executive Committee meets in Stormont Castle, also on the Stormont Estate. Its work is co-ordinated by the Executive Office (First and deputy First Minister).

Ministers are responsible for day to day government operational decisions within their own areas of responsibility. They get together as the Executive Committee to draw up the draft Budget and Programme for Government (PfG) which have to be approved by the Assembly. The Executive approves the introduction of Executive Bills to the Assembly.

As the elected body which appoints the Ministers, the Assembly must hold the Executive to account, scrutinising Ministers’ proposals for new laws (Bills) and operational decisions. For every Government Department, there is an Assembly Statutory Committee which shadows the work of that Department and Minister. As positions of power, the Chairpersons of those committees are also appointed using the d'Hondt system. Arrangements for an official Opposition are in place (strengthened as a result of the New Decade, New Approach Deal. Currently the SDLP forms the Opposition. MLAs can individually hold Ministers to account by asking written and oral questions and highlighting issues in Assembly debates and in the media which they want Ministers to address.

Play the video on the Assembly and Executive to see how d'Hondt works.