[4] Wereta has served as the Mäori representative on several government commissions or committees on the electoral system, education and justice.
[8] She has also worked as a policy researcher and/or a manager in the Ministry of Maori Development and its predecessors, and in the Department of Internal Affairs.
[7] She was one of the three members of the Local Government Commission from 1 April 1990 until 31 March 1993, along with Sir Brian Elwood and Doug Pearson.
[14] The Picot Task Force caused fundamental changes in the New Zealand educational system towards greater school autonomy and separation of regulatory responsibilities into different agencies.
[16] She was a member of that committee when, on 15 September 1995, it submitted a report that rejected in the strongest terms the government proposal to abolish the right of appeal to the Privy Council.
[22] At a March 2006 meeting in Ottawa, Ontario, Canada of the UN Permanent Forum of Indigenous Peoples she presented a paper on Towards a Maori Statistics Framework.