SIPTU president Jack O'Connor has said that he is making no apologies to passengers regarding the threatened strike action at Dublin Cork and Shannon airports next week.
Dublin Airport Authority has warned that staggered two-hour work stoppages scheduled for Monday could lead to the effective closure of the three facilities.
Notice of industrial action was served as part of an ongoing row over pensions.
Management at the DAA went to the High Court yesterday in an attempt to halt the move. The case is due to be heard on Friday.
Mr O'Connor said that he is not concerned about people's reaction if the stoppages go ahead.
"Public sympathy, with respect to the public, isn't going to count for very much for 15,000 people when they discover in a few month's time that thanks to the fact that the authorities are insisting on an absolutely absurd funding standard, their pensions are gone," he said.
"Then those people will come and they’ll say to me and they'll say to the shop stewards and the other people representing them out there: 'How did you let this happen?'."