The union is dealing with complaints from Ministry for Primary Industries staff that Wellington Airport's emergency response last week was inadequate.
About 20 minutes after the 7.8 magnitude earthquake a flight from Brisbane landed and staff say they were expected to process passengers with little information about their own safety.
PSA national secretary Glenn Barclay said later when a tsunami warning was issued, many members of staff had to rely on their families for emergency information, and that's not good enough.
"Not having good information, primarily from their employer, raises further questions about the communication between the agencies and Wellington International Airport" said Barclay.
"When you think about it, if you're standing there at the airport texting your wife about tsunamis you wouldn't feel very assured would you. I think they're pretty concerned by the whole thing?"