Irish-based Ryanair pilots have agreed to attend mediation talks tomorrow afternoon.
Trade union Fórsa today accepted an invitation to attend the talks from mediator Kieran Mulvey.
Ryanair has yet to confirm whether it will attend.
The pilots last week served notice of industrial action in their dispute over pay and working conditions.
They said they submitted a 30-page proposal to Ryanair in March seeking "pay levels and structures that are in line with sector norms."
It said the document included detailed proposals on "pensions, working conditions and related matters."
Fórsa is warning that Ryanair must table a "substantive and meaningful counter-proposal" by tomorrow if it wants to prevent strike action next week.
It said any proposal must properly address all areas of the union’s claim.
The pilots are members of IALPA which is a branch of Fórsa.
The union said its mandate for industrial action, which was backed by 94% of its directly-employed Ryanair pilots, remains in place.