Rowan Trezise, 33, has been left behind in England while her husband Richie, 35, has already made the move down under leaving her desperately trying to lose weight.
When the couple first tried to gain entry to the country they were told that they were both overweight and were a potential burden on the health care system.
Mr Trezise managed to shed two inches from his sizeable waistline to fulfil criteria set out as part of his visa application to work as a technician in the country.
His wife however has had no such luck and faces a desperate battle to shed the pounds before Christmas, at which point the couple say they will abandon their overseas plans.
New Zealand officials assess people's weight using Body Mass Index which measures fat by comparing the height and weight of an individual.
Mr Trezise, a submarine cable specialist and former member of the army said his BMI was measured at 42 making him well over the limit of 25 which is regarded as overweight.
My doctor laughed at me. He said he'd never seen anything more ridiculous in his whole life," he said.
"He said not every overweight person is unhealthy or unfit. The idea was that we were going to change our lifestyle totally and get outdoors and on mountain bikes and all sorts of activities."
Robyn Toomath, a spokesman for New Zealand's Fight the Obesity Epidemic and an endocrinologist said that obese people should not be victimised, but agreed with the restrictions.
"The immigration department can't afford to import people who are going to be a significant drain on our health resources.
"You can see the logic in assessing if there is a significant health cost associated with this individual and that would be a reason for them not coming in."
Güncelleme Tarihi: 17 Kasım 2007, 13:47
While the New Zealand Immigration Service could not say how many peolpe had been refused entry on similar grounds, the Emigrate New Zealand website revealed that many people had been banned for being obese.