Many organisations have trained with JMA. Past organisations include:

Accenture, Air International Transit, Alexander Tzannes Associates, Australia Council for the Arts, Australia Post, Australian Catholic University, Australian College of Health Service Executives, Australian Film Television and Radio School, Australian Publishers Association, Baker & McKenzie, Boehringer Ingelheim, Brush Farm Academy for Learning and Staff Development, Bull Information Systems, Central Sydney Area Health Service, Centre for Continuing Education University of Sydney, The Clarke Group, Community Services Commission, Credit Suisse First Boston, Dimension Data, Doubleday, Douglass Hanly Moir, EMI Music, EXXON Coal and Minerals, Foundation for National Parks and Wildlife, Gordon and Gotch, Grain Corp, Harlequin Enterprises, HCF, Horwitz Education, Inghams Enterprises, Institute of Chartered Accountants in Australia, JBA Planning Consultants, Japan Travel Bureau, Legal Aid Commission, Living City Services, Lonely Planet, Macquarie University, Music Sales, NSW Department of Environment and Conservation, NSW Department of Housing, NSW Department of Local Government, NSW Department of Industrial Relations, Office of Film and Literature Classification, OTEN, Professional Systems Development, Quiksilver, Random House, Real Estate Institute of NSW, Roads and Traffic Authority, Saatchi and Saatchi, Starlight Children's Foundation, Sydney Water, Tamworth City Council, Tanner Architects, Thomson Learning, University of NSW, University of Sydney, University of Technology Sydney, University of Western Sydney, Wallenius Wilhelmsen