Aer Rianta unions are in talks this evening with Department of Transport officials about the Minister Brennan's plans to break up the company.
The talks are being chaired by Labour Relations Commission facilitator, Mr Tom Pomphrett, and are understood to be dealing with union concern about how the break-up will affect employment terms and conditions for staff.
Both sides are due to meet for talks dealing the Shannon stopover and a second terminal for Dublin airport.at a later date.
Aer Rianta unions have accused the Minister of being of misusing Exchequer funds in the breaking up the company.
They claim Minister is deliberately ignoring the advice of consultants and Cabinet colleagues.
However, Mr Brennan insists he is going ahead with the break-up and says he has the backing of the Cabinet.
SIPTU's branch at Dublin Airport has called a staff meeting on Friday to brief members on today's talks with the department.