• 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,...
  • 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

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

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 ...
  • 2025-01-03

The Honourable Michael L. Phelan

The Honourable Michael L. Phelan is a mediator and arbitrator. Michael specializes in competition law and intellectual property disputes.
  • 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

Marvin J. Huberman

Marvin J. Huberman, mediator and arbitrator at ADR Chambers. He specializes in corporate, commercial, administrative, public, banking, labour, shareholder, securities, fiduciary, estates and wills, intellectual property, First Nations, constitutional/human rights disputes.
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