Around 100 members of unions against further cuts to pay in the public service turned out for the 'No to Croke Park 2' rally in Dublin today.
The campaign wants the government to take note of their 'no' vote to Croke Park 2 and said the Haddington Road Agreement is almost identical to it.
They are calling on the government to find an alternative way of making the €1bn in savings required over the next three years.
Their opposition comes despite the Finance Minister Michael Noonan confirming yesterday that there will be no further negotiations on the revised public sector pay deal and that legislation will be imposed in the case that it's rejected.
Niall Smyth, district secretary at the INTO, said if the government enforces a deal, when September comes there might not be any teachers in the classrooms.
"No teacher wants to be out on strike. People love the job they do, and want to be teaching.. The aggressor here is the government, we are not seeking to cause disruption.
"If this government seeks to cut my pay and conditions again, for the third time in as many years, I'm going to stand up and defend my pay and conditions.
"They can expect that."