COAT was established at a meeting of Commonwealth, State, Territory and New Zealand heads on 6 June 2002. The following are the current appointed officeholders to the COAT Executive:

• Chair:  Ms Anne Britton, Principal Member, NSW Civil and Administrative Tribunal (NSW)
• Deputy Chair: Mr David Plunkett, Chair, Weathertight Homes Tribunals (NZ) 
• Secretary: Ms Kath McEvoy, Associate Professor, Adelaide University (SA)
• Treasurer: The Hon. Justice David Thomas, President,  Administrative Appeals Tribunal (QLD)
• Public Officer: Belinda Cassidy, Principal Claims Assessor, Motor Accidents Assessment Service (NSW)

Members of Executive:

Mr Greg Geason 
Chairman, Resource Management & Planning Appeal Tribunal (TAS)

Mr Graeme Neate AM
President, ACT Civil and Administrative Tribunal (ACT)

Deputy President, VIC Civil and Admiistrative Tribunal (VIC)