• 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

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...
  • 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

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

Paul Winfield

Paul is an arbitrator and mediator with ADR Chambers. Paul has over 33 years of construction experience, progressing from site to executive level on commercial developments, industrial, transportation and infrastructure, oil and gas, processing plants, airports, rail, civil engineering, and nuclear facilities.
  • 2025-01-03

The Honourable Daniel H. Tingley

The Honourable Daniel H. Tingley, bilingual mediator and arbitrator at ADR Chambers. He specializes in insurance, real estate, employment, commercial, investments, franchise, medical disputes, malpractice, family disputes, intellectual property, First Nations and partnership disputes.
  • 2025-01-03

Peter L. Roy

Peter is a mediator & arbitrator & has expertise in corporate and commercial disputes. He is an FCIArb and holds a Harvard Mediation Certificate.
  • 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.
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