John has maintained a wide-ranging practice throughout his career appearing in Courts of first instance, at intermediate and appellate level, and in the High Court of Australia. He has regularly appeared in both State and Federal Courts and tribunals in NSW and across Australia.

While the bulk of his work over many years has been in the commercial area, he has also developed a substantial speciality in industrial law and employment law generally. In this latter area he has appeared in many leading cases involving the Australian mining industry, the transport industry, and also in the Waterfront dispute.

John appeared in the HIH Royal Commission and also in the Glenbrook Rail Inquiry. His work in commercial arbitration includes the lengthy proceedings consequent upon the closure of the submarine re-fit program at Cockatoo Island Dockyard, and also in international arbitrations. He has also considerable experience in coronial inquiries involving, for example, the aftermath of a collapse in a metalliferous mine.

For the last decade or so, John as practised as a mediator of commercial disputes of all kinds. He is also experienced in the investigation of misconduct in the workplace and in the conduct of domestic disciplinary tribunbals.

John has been an active member of the Inter-Pacific Bar Association over many years, culminating in his appointment as Regional Co-ordinator for the Asia-Pacific region from 2011 to 2013.

John has been recognised by Doyle's Guide in the areas of Arbitration, Mediatio and in Health and Safety Law.  He has also been recognised by Who's Who Legal in the field of Commercial Mediation.