• 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...
  • 2026-02-27

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...
  • 2025-01-03

Allan J. Stitt

Allan J. Stitt is a mediator and arbitrator at ADR Chambers. He specializes in commercial, employment, governance, harassment, human rights, workplace, personal injury, sports, contracts, transportation, investments and franchise disputes.While at Harvard Law School, he studied negotiation and ADR.
  • 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

Jonathan Flanders

Jonathan Flanders, mediator and arbitrator at ADR Chambers. He specializes contracts, corporate, partnerships, bankruptcy, franchise, securities, transportation, investments, harassment, workplace, personal injury disputes, libel and slander, construction, engineering, and infrastructure.
  • 2025-01-03

Benjamin M. Drory

Ben Drory is an investigator, mediator & arbitrator. He investigates workplace, municipal, and banking disputes.
  • 2025-01-03

Daniela T. Corapi

Daniela’s areas of expertise includes insurance, employment, trusts and estates, commercial, personal property disputes, administrative and regulatory law.
  • 2025-01-03

John A. Campion

John A. Campion, arbitrator and mediator at ADR Chambers. He specializes in commercial, banking, competition, energy, family, fairness, directors & officers liability, mining, securities, transportation, investment dealers, wrongful/constructive dismissal and construction disputes.
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