• 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...
  • 2025-08-11

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

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

W. A. Derry Millar

W. A. Derry Millar, mediator and arbitrator at ADR Chambers. He specializes in commercial, estates, environmental, insurance, aviation, products liability, investment dealers, wrongful/constructive dismissal, medical/health industry, public policy and intellectual property 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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