Commercial - Canadian Arbitration Association

2026-10-14

Matthew L.O. Certosimo

Matthew Certosimo is a mediator and arbitrator with ADR Chambers. Matt has over 34 years’ experience in all areas of employment and labour disputes including wrongful/constructive dismissal, grievance arbitrations, human rights, workplace disputes, labour relations, workers’ compensation, collective bargaining, employment...

2026-10-14

Mark S. Hayes

Mark Hayes is an arbitrator and mediator with ADR Chambers, bringing more than 40 years of experience to the resolution of complex commercial, technology and intellectual property disputes. Mark’s areas of expertise include technology, intellectual property, copyright, entertainment and media law,...

2026-10-05

Peter C. Wardle

Peter Wardle is an arbitrator and mediator with ADR Chambers. Peter has more than 40 years of experience in complex dispute resolution. His areas of expertise include contract disputes, shareholder and partnership disputes, securities, directors’ and officers’ liability, professional negligence, insurance,...

2026-10-05

Norman A. Keith

Norman (Norm) Keith is a mediator, arbitrator and investigator with ADR Chambers. Norm has experience in employment, labour relations, human rights, ethics violations, commercial, corporate governance, executive misconduct, construction and securities law. He also has experience resolving disputes in alcohol and drugs in...

2026-08-18

Richard Macklin

Richard is a mediator and arbitrator with ADR Chambers. Richard served part-time, from 2006 to 2018, as a Vice-Chair with the License Appeal Tribunal for Ontario, conducting hearings and arbitrations. Richard has also been a civil litigator for over 30...

2025-08-11

The Honourable Joseph R. Nuss

The Honourable Joseph R. Nuss, C.M., K.C., Ad. E., FCIArb, is a domestic and international arbitrator and mediator with ADR Chambers. His areas of expertise include commercial, real estate, construction, employment, shareholder and insurance disputes. Mr. Nuss is a former...

2025-08-08

Roger B. Greenberg

Roger Greenberg is an arbitrator and mediator with ADR Chambers. Roger has arbitrated and mediated cases including those involving contract, employment, construction, real estate, intellectual property, franchise, malpractice, banking, insurance, tax, eminent domain, securities and other disputes. Roger is an...

2025-01-03

Michael L. Maynard

Michael Maynard is a mediator, settlement officer & investigator. Expertise in administrative, civil, code of conduct/disciplinary matters, contract, insurance, landlord/tenant, and workplace disputes.

2025-01-03

Frank Zaid

Frank Zaid, a Toronto mediator and arbitrator at ADR Chambers. He specializes in franchises and intellectual property disputes.

2025-01-03

Howard Winkler

Through his commercial litigation experience, Howard also has experience in insurance, employment, shareholder, entertainment, intellectual property, landlord/tenant and real estate disputes. He has acted for media and plaintiffs and defendants in defamation matters and has a balanced perspective on the ...

Canadian Arbitration Association

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