Jacinda Ardern has spoken to Napier MP Stuart Nash, after he swore at an Air New Zealand staff member.
The Prime Minister told Hawke's Bay Today she had spoken to Nash on Thursday.
"I spoke to Minister Nash yesterday to reiterate my expectation that he will conduct himself professionally and politely at all times."
"I understand he apologised on the day, but it's my expectation this won't happen again."
Nash was attempting to take a flight from Napier to Wellington on July 3, arriving at the gate 25 minutes before the flight departed.