Aer Lingus is to impose 230 compulsory redundancies among its cabin crew.
The cabin crew rejected the airline's cost-cutting plan in recent days.
Around 440 further jobs will go on a voluntary basis from the four staff groupings who voted to accept the €97m restructuring deal.
Aer Lingus chief executive Christoph Mueller said he has formally given the Government 30 days notice of the compulsory redundancies as required by law.
He revealed there would also be new working conditions and new salary levels
The airline boss confirmed talks with Impact trade union, which represents the majority of cabin crew, would begin again over the cuts but vowed there would be no “sweatheart deal.”
“One thing is for sure, there will be no sweetheart deal with cabin, I believe that is my understanding of fairness,” said Mr Mueller.
“Someone who votes no to a proposition should not get an easier way out than the ones who have voted in favour.
“Number two retaliation is not our business, it will have no element of the nature.
“And number three there will be no re-balloting.”