The Irish Nurses and Midwives Organisation has raised concerns about staffing levels at the country's maternity hospitals.
It follows the publication of a report into the standard of care at the maternity unit of the Midlands Regional Hospital in Portlaoise, which led to the deaths of four babies.
The report published yesterday detailed a catalogue of failings in the standard of care at the maternity unit of the Midland Regional hospital in Portlaoise.
It made 11 critical recommendations.
One recommendation was the call for HIQA to undertake an investigation into maternity services at the hospital.
The INMO has welcomed the publication of the report.
It said it highlighted issues at the unit, as far back as 2006.
The INMO said it was not only concerned about staffing levels at Portlaoise but at the country's other maternity hospitals too.
A helpline at Portlaoise Hospital will re-open at 9am tomorrow.