| Period | Position | Office/Committee |
| 12/01/2015 - 11/05/2016 | Speaker | Northern Ireland Assembly |
| 12/01/2015 - 30/03/2016 | Committee Chair | Business Committee |
| 20/03/2014 - 06/10/2014 | Committee Member | Concurrent Committee of the Committee for Enterprise, Trade and Investment and the Committee for Justice |
| 21/10/2013 - 06/10/2014 | Committee Member | Committee for Enterprise, Trade and Investment |
| 15/04/2013 - 12/01/2015 | Principal Deputy Speaker | Northern Ireland Assembly |
| 08/10/2012 - 12/01/2015 | Committee Member | Concurrent Committee for Committee for Enterprise Trade and Investment and Committee for Finance and Personnel |
| 09/06/2011 - 15/04/2013 | Assembly Private Secretary | Department of Education |
| 23/05/2011 - 06/10/2014 | Committee Member | Committee for Finance and Personnel |
| 23/05/2011 - 15/04/2013 | Committee Member | Public Accounts Committee |
| 09/09/2009 - 25/03/2011 | Committee Member | Committee for Finance and Personnel |
| 09/05/2007 - 08/09/2009 | Committee Chair | Committee for Finance and Personnel |
| 09/05/2007 - 25/03/2011 | Committee Member | Public Accounts Committee |
| 09/05/2007 - 09/09/2007 | Committee Member | Committee for Enterprise, Trade and Investment |
| 01/07/2002 - 28/04/2003 | Committee Member | Education Committee |
| 06/06/2002 - 24/06/2002 | Committee Member | Ad Hoc Committee on Access to Justice |
| 26/11/2001 - 14/01/2002 | Committee Member | Criminal Justice Reform |
| 30/11/1999 - 18/09/2000 | Committee Member | Committee of the Centre |