Simon Mercep is set to step down as presenter of the afternoon show on Radio New Zealand.
It is understood that Mercep was told of change yesterday afternoon by Radio New Zealand head of radio John Howson.
He went ahead to present the 1pm-to-4pm show that day.
A spokesman for Radio New Zealand declined to discuss Mercep's future at RNZ.
John Barr said Mercep was on leave for three days and RNZ expected him to return on Monday.