New Zealand Post chairman Michael Cullen is not ruling out job losses as the state-owned enterprise seeks to reduce its costs.
New Zealand Post representatives appeared before Parliament's commerce select committee on Thursday for its annual financial review.
Dr Cullen told MPs that one of its subsidiaries, Kiwibank, has been staffed on the assumption of very strong growth, but slower growth is expected this year.
He says there will be rationalisation at Kiwibank and New Zealand Post's other businesses, and job losses are possible.
MPs also heard that staff in Christchurch have been taking a flexible approach with Kiwibank customers who lost their identification in the February earthquake in order to help them access their money.