Sinead Ahern, chair of Labour Women, and Senator Ivana Bacik during the launch by Labour Women of the General Scheme of the Labour Women Repeal the 8th Amendment Bill in Buswells Hotel,Dublin. Photograph: Gareth Chaney/Collins.

The Labour Party has published plans to scrap Ireland’s Eighth Amendment ban on abortion - which will form a key demand of the party in post-election coalition negotiations.

The 1983 amendment, which governs Ireland’s abortion laws, enshrined the equal right to life of the mother and the unborn in the Constitution.

Labour Senator Ivana Bacik said Labour’s proposals would allow for abortion under four medically-certifiedgrounds: risk to life; risk to health; cases of rape; and fatal foetal abnormality.

It would also decriminalise abortion.

“The Labour Party is the party of social change and we are including a commitment in our manifesto to hold a referendum to repeal the eighth amendment if returned to Government,” Ms Bacik said.

“Labour Women have produced this framework for the scheme of a Bill which would be introduced by the Labour Party if the eighth amendment is repealed by way of referendum.”

Labour is seeking to build a cross-party consensus, she said. Consultant Obstetrician Dr Peter Boylan, former Supreme Court Judge Catherine McGuinness and former Senator Dr Mary Henry attended the launch.

The chairwoman of Labour Women, Sinead Ahern, said an average of 12 women travelled from Ireland to the UK for abortions every day.

“Abortion is already a reality for women in Ireland and we cannot continue to export this issue. Nobody under the age of 50 has had a chance to vote on whether the eighth amendment should be in our constitution. It’s time we let the people have their say,” Ms Ahern said.

She insisted public opinion on abortion was changing, “and we know that the majority of voters want to repeal the eighth amendment”.

Describing Labour’s stand as “blinkered”, the Pro-Life Campaign’s deputy chairwoman Cora Sherlock said she believed some parents are coming under pressure to abort following the diagnosis of a life-limiting condition.

“The thing that stands out about today’s launch by the Labour Party is the complete absence of any mention of the unborn child’s right to life,” she said.

Ms Sherlock said abortion had “devastating effects” on many women.

Referring to Labour, she said: “Do they seriously think they can run and hide and ignore the grave injustice that abortion involves and its long-lasting effects?”