It follows reports of hours of queues from last weekend.
Dublin Airport is coming under increasing pressure to sort staffing issues.
Passengers were left waiting for hours over the weekend with some even missing their flights.
Dublin Airport cited staffing issues and a drone flying over the airstrip as compounding the problem.
But it looks unlikely that the scenes from the weekend will be improved upon any time soon.
The DAA has apologised as many missed their flights.https://t.co/z30t55ymWE
— SPIN 1038 (@spin1038) March 29, 2022
Niall Philips from SIPTU, which represents airport staff, has spoken about the problems.
He says even with a recruitment drive, it will take time to train up new workers.
"The security, where there seems to be a bit of a bottleneck at the airport, it takes six weeks to train a security officer."
"There's about seven exams that these people have to pass as they go through."
The DAA has been criticised over the terms and conditions on offer for new security personnel.
The role includes a minimum salary of 283 euro a week.