This season was notable as the first to hold both semi-finals and the final at Croke Park, giving the League additional prestige.
Quarter-finals Semi-finals Final Clare, Cork, Derry and Meath entered Division 2 as the promoted and relegated teams from the previous season.
On 12 March 1989, Dublin secured the title following a 3-7 to 1-3 win over Cork in the final round of the group stage.
Down, Longford and Roscommon entered Division 3 as the promoted and relegated teams from the previous season.
On 12 March 1989, Down secured the title following a 7-5 to 1-9 win over Kildare in the final round of the group stage.