"I can tell you he was an extremely experienced conservation worker and he had a lot of skill. He led teams in Romania into quite rugged areas to do conservation work. He had a Masters degree, I understand he was a botanist."
Mr Morrison said the department had been in contact with the Romanian embassy in Australia and with Mr Muncus-Nagy's wife.
"Obviously she is incredibly distraught and coming to terms with the fact she is unlikely to see her husband again, or even recover her body. It is a terrible tragedy for her being so far away."
The department had offered to bring his wife over to New Zealand and take her to Raoul Island, he said.
Mr Morrison said counselling would be offered to Mr Muncus-Nagy's "tight-knit" colleagues on Raoul Island.
"They're obviously very upset. They're exhausted, they've had a real emotional rollercoaster. They've been searching for him and coming to terms with the fact that they are probably never going to find his body."
Mr Morrison said there would be a Department of Labour investigation into the accident but believed DOC follows best practice regarding volunteers working in remote areas like Raoul Island.
It is believed Mr Muncus-Nagy may be have been washed off the rock by a wave.
"It does look like this was a freak accident," Mr Morrison said.
- Herald online