The Government says it will oppose a bill that would give New Zealanders Monday off work if Waitangi Day or Anzac Day falls on a weekend.
The Holidays Amendment bill put forward by Labour Party MP David Clark will be debated in Parliament in its first reading.
One cabinet minister said the idea to "mondayise" public holidays was "appalling".
Justice Minister Judith Collins said Anzac day was a day of commemoration and remembering the dead.
"Frankly to reduce it into a three day weekend is, I think, very disrespectful to the people whose lives have been lost. If people need to have a holiday to go and actually turn up at dawn parade then there's something wrong."