• 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...
  • 2026-10-05

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...
  • 2026-03-11

The Honourable Robert Keith Rae

Bob Rae is an arbitrator and mediator with ADR Chambers. Mr. Rae is a Canadian lawyer, diplomat, and former politician whose career spans senior roles in public office, law, and international diplomacy. He built a distinguished career as a mediator,...
  • 2026-02-27

Brian A. Blumenthal

Brian is a mediator, arbitrator and investigator with ADR Chambers.  He has extensive experience in the administrative justice sector in Ontario. His areas of expertise includes employment and human rights disputes, sexual harassment, workplace harassment, discrimination and reprisal, occupational health...
  • 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...
  • 2025-01-03

Jason Stitt

Jason is an Adjunct Professor at the University of Toronto Law School teaching Negotiation. He provides Alternative Dispute Resolution, negotiation and coaching training to organizations and the public throughout Canada, the Caribbean and the United States. Jason has provided training ...
  • 2025-01-03

Edward T. McDermott

Edward T. McDermott, mediator, arbitrator, investigator at ADR Chambers. He specializes in contracts, wrongful dismissals, collective bargaining, human rights, employment, fairness monitory, family, labour relations, workman compensation and workplace restoration disputes.
  • 2025-01-03

The Honourable Thomas R. Lederer

Thomas Lederer is a retired judge. He conducted civil trials involving commercial transactions, product liability, estates and constitutional issues.  He is available for mediations, arbitrations and investigations
  • 2025-01-03

Clint G. Docken

Clint G. Docken, mediator and arbitrator at ADR Chambers. He specializes in bankruptcy, class actions, labour,constructive dismissal, product & professional liability, agricultural, aviation, environmental, oil & gas, sports, construction, engineering, infrastructure and First Nations.
  • 2025-01-03

Andrew M. Diamond

Andrew M. Diamond is a mediator and arbitrator at ADR Chambers. He specializes in corporate, partnership disputes, bankruptcy, collections, harassment, human rights, wrongful dismissals,tort litigation, auto accidents, accident benefit, product liability, slip and fall cases.
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