Survivors of the country's Mother and Baby Homes will be presented with the Commission of Investigations final report later.
It was establised in 2015 and is expected to detail how 9,000 children died in the institutions - a mortality rate 4 times that of the general population.
Government ministers will discuss the findings at Cabinet this morning, ahead of a presentation to survivors and its eventual publication.
Sinn Fein leader Mary Lou McDonald says a planned state apology by the Taoiseach is welcome, but will not be enough for survivors: