A union document sent to airline management shows most sections of Siptu members at the airline overwhelmingly rejected the terms, with only two out of 13 accepting it.
The union’s “cabin appearance” section unanimously rejected the proposal. The union’s sector committee had recommended it should be rejected.
It is understood that the pay offer would mean a 3pc or €960 increase, whichever is greater, from January 1 next year.
There would be a further 1pc or €320 increase from July 1 next year.
A current pay deal would be extended until the end of next year.
The Siptu staff’s rejection comes after cabin crew at the airline who are Fórsa members indicated that they may also reject the terms.
Fórsa’s ballot ends next Tuesday.
A demand for €1,500 vouchers that was rejected by Aer Lingus management appears to be a sticking point in the dispute.
The workers want a gesture to reflect concessions made to pilots following a disruptive dispute last year.
A deal agreed with pilots meant a €34m debt relating to their pay arrangements during the Covid pandemic was written off.
A poll of Fórsa members revealed that they believe the deal does not go far enough to address “pay anomalies” that arose during the Covid pandemic.
A meeting of the Aer Lingus cabin crew branch committee decided to recommend a vote against the new pay terms in the ballot.
It is understood that management tabled a pay offer on September 5, followed by talks with an Irish Congress of Trade Unions-led group of unions.
“The poll return was high and it shows very clearly that the proposals do not go far enough to close the pay gap that emerged during the global pandemic,” said Fórsa official Lisa Connell.
“Specifically, there’s been a legacy impact on cabin crew pay because of the airline’s decision to reduce cabin crew pay to just 30pc.”
She said this was a devastating time for aviation workers and the experience hit them hard.
“Many are still trying to recover financially as a result of those Covid-era measures, and our cabin crew members believe the deal falls short of undoing the legacy of those measures,” she said.
She said this was an issue that IALPA members were able to address through debt forgiveness in last year’s pilots’ pay deal.
In an “important update” sent to Fórsa members, the officers of the cabin crew branch executive said over 90pc of members believe the proposal is unacceptable.
Their message indicated that a demand for €1,500 vouchers that was rejected by management is a key element of the dispute.
It said the branch could not recommend this proposal as it is currently formatted and is recommending rejection.
It said this was due to a “lack of a means in addressing the pilot debt forgiveness”.
The message said members had cited the need for vouchers to be provided for the deal to address this issue and be accepted.