By comparison, in lowest ranked Switzerland just 13 per cent said they were burnt out.
Doctors from Australia, Britain, Canada, the United States, the Netherlands, France, Germany and Sweden were also surveyed.
Royal College of General Practitioners medical director Dr Bryan Betty said about 400 doctors here responded.
He was not surprised by the results because of the workforce shortages and the lack of support.
“It’s another wake-up call to what we’ve been seeing happen over the last two or three years that this is genuine - especially when we start comparing it to other western countries,” he said.
Short-term, more international doctors and nurses were needed to help boost the workforce, he said.
Beyond that, more New Zealand doctors needed to be trained.