Talks are to take place tomorrow aimed at averting industrial action at Ryanair.
The union, which represents Dublin based pilots who are directly-employed by the airline, has accepted an invitation to mediation talks.
Last Friday, pilots who are members of the Irish Airline Pilots' Association, voted overwhelmingly in favour of a strike in a dispute over a pay and conditions.
Fórsa, the parent union of IALPA, said a 30-page proposal was submitted to Ryanair management in March, seeking what it said were "pay levels and structures that are in line with sector norms".
It also made proposals on pensions, working conditions and related matters.
The union said today "a substantive and meaningful counter-proposal from Ryanair management" will need to be tabled tomorrow to prevent strike action next week.
Fórsa also said IALPA's mandate for industrial action, backed by 94% of the pilots who voted, remained in place.
Around 180 of Ryanair's Irish based pilots are represented by IALPA.
Ryanair responded on Friday to the vote by saying it was disappointed the union was threatening to disrupt customers' travel plans during August.
It claimed the threatened strike was supported by a minority of Ryanair pilots and was ill-timed given the looming Brexit deadline.
The talks tomorrow will be mediated by Kieran Mulvey.
Last week, Ryanair's UK-based pilots who are members of the British pilots' union, voted to strike over two days later this month, beginning on 22 August and for three days starting 2 September.
Members of Ryanair's Portuguese cabin crew trade union are also set to go on strike for five days from 21 August in a dispute over leave.