Management and unions at Aer Lingus have made presentations to the National Implementation Body (NIB) regarding the dispute over proposed changes in working practices at the airline.
A spokesman said the Government's industrial relations watchdog was this afternoon considering submissions from both sides in the dispute.
The NIB was asked to intervene in the dispute by the Irish Congress of Trade Unions amid the threat of industrial action by staff who are objecting to proposed changes in working practices.
Unions say the changes - some of which refer to holiday and overtime pay and grading structures - have not been agreed with workers.
The measures were outlined by management in December as part of a radical cost-cutting programme aimed at making the airline more profitable.