Newshub understands Rob Campbell is set to be fired from his role as Environmental Protection Authority chair.
It follows his sacking as chair of Te Whatu Ora/Health NZ.
The firing comes after Campbell posted a political statement to his LinkedIn criticising National’s Three Waters policy.
Campbell refused to back down from the statement that the policy was a "thinly disguised dog whistle on co-governance".
Health Minister Ayesha Verrall said she no longer had confidence in his political neutrality.
Campbell told Newshub in an interview on Wednesday morning that he had spoken briefly to Environment Minister David Parker.
When asked whether he would also be removed as chair of the EPA, told Newshub: “It would seem really quite ridiculous to simply be offering up more heads to Opposition politicians who obviously won't be satisfied, it's clear what they want.
“Why the government is accomodating that, I don't know.”
A spokesperson for the responsible minister, Parker, confirmed the minister had written to Campbell seeking explanations on Wednesday.
Campbell wanted ministers to act with “cool heads”.
“This is making a mountain out of a molehill. Let's taihoa and let's perhaps slow down a bit.”