Two of the country's largest teachers' unions said that they do not believe the new public sector pay deal is enough of an improvement on Croke Park II.
In a statement last night, the ASTI and the TUI said they still believe it is possible to reach an agreement if talks resume.
That is despite the Finance Minister's warning that there will be no further negotiations - and that the Government will legislate for the cuts.
Members of the TUI will voice their opposition at a 'No-2-Croke-Park-2' Rally in Dublin today.
Spokesperson Martin Marjoram said the new Haddington Road Agreement is no different to the proposals rejected by unions last month.
"We really need to go ahead with this rally because these are largely the same proposals that were rejected by almost 70% of public servants in the first vote," he said.
"It is very important now that we organise unions that are going to ballot to deliver another resounding no vote because it is an entirely unfair imposition on public servants."