Workers at aircraft maintenance company Shannon Aerospace, one of the mid-west's largest employers, will decide today what action they will take in their dispute with management.
The dispute has already led to one major European airline withdrawing an aircraft which was due to undergo an overhaul at the facility.
Workers at the Lufthansa- owned plant based at Shannon airport, which employs 800 staff, were balloted this week for strike action after the company confirmed plans to remove previously agreed entitlements in an effort to offset costs.
The Labour Court has already recommended that both sides meet in an effort to resolve the issue. However, according to the union, the company has offered nothing which would satisfy workers.
The majority of the staff are members of Siptu, which claims that after recent profitable years, the company is in a position to adhere to national pay deals.
Last month the Labour Court accepted the findings of an independent report that outlined the potentially dangerous financial position faced by the company if work practices did not change.
Union spokeswoman Mary O'Donnell said they are still available to speak to the company if it comes up with a proposal which would not see salary or conditions taken from members.
A spokesman for Shannon Aerospace said it requires cost offsets to enable it to pay the last two phases of the national agreement Sustaining Progress.
"An independent assessor examined these issues and reported last January that 'in all these circumstances I believe the company is entitled to and needs off-setting costs'," he said.