Hayes served as Chair of the Fine Gael parliamentary party from September 2002 to March 2010. He was party deputy spokesperson on Transport, with responsibility for Road Safety from October 2010 to March 2011.
^Treacy served as Ceann Comhairle in the 20th Dáil from 1973 to 1977, and was returned automatically at the 1977 election. He lost the Labour party whip in February 1985.
^Treacy served as Ceann Comhairle in the 25th, 26th and 27th Dáil from 1987 to 1997, and was returned automatically at the 1989 and 1992 elections.