People coming to live in New Zealand would need to take out personal medical insurance for at least 10 years, under a policy being considered by NZ First.
The party's leader Winston Peters has expressed his support for the idea, saying "we have to stop having a soft heart and a head to match".
"You can climb off a plane in New Zealand and be in hospital the next day," Mr Peters said. "We have long waiting lists...it seems to me to be only reasonable and fair."
NZ First is holding its annual convention in Rotorua, with delegates considering a number of remits. If accepted, they will be examined by caucus.
The Rodney delegation has put forward policy that, "all new settlers in New Zealand must take out personal medical insurance cover for a period of 10 years minimum".
Mr Peters said that if reciprocal arrangements existed that allowed Kiwis to get medical cover in a new arrival's country-of-origin, they would not need insurance.