Ministerial power over department chief executives (Newstalk ZB)

(8 April 2026) Dr Oliver Hartwich told Ryan Bridge why ministers should have the power to appoint and dismiss their department chief executives. 

The new public service mega-merger (Newstalk ZB)

(17 December 2025) Dr Oliver Hartwich discussed the government's plan to merge five ministries into one new mega-ministry. 

Closing the corporate tax loophole (Newstalk ZB)

(2 December 2025) Newstalk ZB's news carried Dr Oliver Hartwich's proposal to stop companies escaping their tax debts by folding and starting again under a new name. 

Let the Reserve Bank do its job (Newstalk ZB)

(24 September 2025) Newstalk ZB's news carried Dr Oliver Hartwich's call for politicians to let the Reserve Bank do its job. 

Defending the Reserve Bank against scapegoating (Radio NZ)

(23 September 2025) RNZ's Midday Business News reported Dr Oliver Hartwich's defence of the Reserve Bank against political scapegoating. 

Reining in public spending (Newstalk ZB)

 (3 September 2025) Dr Oliver Hartwich joined Leighton Smith on his podcast to discuss why the government must rein in the growth of public spending.

Trump's trade turmoil (Newstalk ZB)

(4 June 2025) Dr Oliver Hartwich discussed the global fallout from Donald Trump's tariffs with Heather du Plessis-Allan.