From 1990 through 2010, he was the founder and president of DRS Dispute Resolution Services LP. In 2010 he merged that firm with ADR Chambers, Canada’s largest provider of alternative dispute resolution processes and training.

Cliff has established many of the benchmarks for dispute resolution in Canada.

Since 1989, he has been retained in excess of 3000 matters and is regarded as an individual who is able to assist in the resolution of  the most difficult and hotly debated cases. 

His primary areas are insurance litigation, professional malpractice, class actions, defamation, sexual assault/abuse, workplace disputes, and community based conflicts. His cases have included very high profile and delicate litigation matters that have been successfully resolved away from the public eye.

Cliff has substantial experience in mediation and mediation advocacy training and has been an international guest lecturer/speaker at many universities, organizations and public forums across North America and Europe. He co-managed the development of a mediation advocacy program for the American Bar Association National Institute, which has since been taught to more than 1000 lawyers and mediators throughout North America.

In 2008, Cliff co-found the Canadian National Mediation Advocacy Competition and in 2010, the subsequent International Mediation Advocacy Competition both of which were designed to encourage law schools throughout the world to teach enhanced skills for students who will be representing clients in mediation.

Cliff has also been appointed as both judge and mediator through the International Chamber of Commerce (Paris, France) and the American Bar Association for national and international law school mediation competitions.

Cliff is a Founder, Past President and Distinguished Fellow of the International Academy of Mediators, past Chair of the American Bar Association, Dispute Resolution Section's Mediation Section, and past co-chair of the ABA National Institute on Advanced Mediation and Advocacy Skills Training.