Joan Withers was appointed a director of Mighty River Power in August 2009 and Chair of the board in October 2009. She is Deputy Chair of Television New Zealand, a director of ANZ Bank New Zealand Limited and of The Treasury Advisory Board, a trustee of Pure Advantage, the Sweet Louise and the Tindall Foundations. Joan retired as Chair of Auckland International Airport in October last year after serving 16 years on the board. She has more than 20 years’ experience at a senior executive level in the New Zealand media industry, including serving as Chief Executive Officer of Fairfax New Zealandand The Radio Network of New Zealand.