ACT Leader David Seymour says Te Whatu Ora's board chair should lose his job over comments made about National's Three Waters policy, and Christopher Luxon.

Rob Campbell is under fire after he apparently took to social media to vent about the Opposition's proposal to scrap the reform, and ensure councils retain water infrastructure.

Seymour says it's bigger than just criticising a policy.

He says it's about the time-honoured and proud tradition of a neutral public service and a commitment to serve the Government of the day, regardless of their views.

LISTEN ABOVE

• Health NZ chairman Rob Campbell under fire for Three Waters LinkedIn 'rant'
• National vows to dump controversial Three Waters plan
• Chris Luxon on National's new water policy, Local Water Done Well