Its on a dispute over staff transfers and redundancy terms.
Forsa Trade Union's criticised Aer Lingus management over a decision not to attend a Labour Court hearing, due later this month, on the closure of the company's Shannon base.
The union had referred the issue to the court, after failing to reach agreement over staff transfers and redundancy terms.
83 cabin crew are affected by the move which was announced by the company in May.
In a statement, Aer Lingus says the decision to close the Shannon cabin crew base was not taken lightly and a reversal will not be possible.
Fórsa critical of Aer Lingus stance on Shannon base https://t.co/bguF0DE22G via @rte
— Fórsa trade union (@forsa_union_ie) July 8, 2021

Sharp Rise In M9 Collisions With Garda Call-Outs Up Year-On-Year
Councillor Seeks Clarity On How Often Nightclubs and Late Bars In Naas Are Inspected For Fire Risks
New Figures From CSO Reveal How Much International Protection Applicants Earn Compared To Average Worker In Ireland
Unpaid Eight-Month Work And Training Placement For Adults With Disabilities Branded "Extremely Unfair"
Department Of Education Defends Kildare SNA Cuts Amid Claims Of Reduced Need At Some Schools
Naas Nurses Threaten Escalation As Staffing Row Deepens
Driving Tests Face Disruption As RSA Testers To Strike Next Week
Jury Delivers Not Guilty By Reason Of Insanity Verdict In Ballyfin Demesne Strangling Case