Eion has extensive corporate experience in New Zealand. He is currently Chairman of the Edgar Olympic Foundation, Hawaiki Submarine Cable LP, NZ Dementia Prevention Trust, Queenstown Resort College and the Winter Games NZ Charitable Trust. He is Patron of Diabetes NZ, NZ Football Foundation, NZ Sports Hall of Fame, Queenstown Trails Trust and ShelterBox NZ.
Eion was formerly Chancellor of the University of Otago, Chairman of the New Zealand Stock Exchange and President of the New Zealand Olympic Committee. He was also formerly a Director of the Reserve Bank of New Zealand, the Accident Compensation Commission, Mt Cook Alpine Salmon, and Vero Insurance New Zealand Limited.