The General Secretary of the Civil and Public Services Union has said he is at a loss as to how further savings can be made at the lower end of the public sector.
Yesterday, unions agreed to enter talks with management next Wednesday to discuss the government's plan to raise a further €1bn from the Croke Park Agreement.
The talks would see an extension of the agreement, covering issues such as extra working hours for the same pay, increments and premium pay.
General Secretary of the Civil and Public Services Union Eoin Ronayne said he did not see any scope for cuts to the payroll at the lower end of the public sector.
"So many members in the private and in the public sector at low wage income levels are now either entering into the Family Income Supplement system, or are dependent on interest-only mortgage payments," he said.
"So really what scope there is to cut costs in terms of payroll at the lower end would seem to me to be gone."