Team Competencies

  • Dispute Resolution & Advanced Dispute Resolution Experts
  • Members with the Canadian Association of Registered Professional Trainers
  • Multiple Certificates from Canadian Standards Association in OH&S topics.
  • Members with Board of Canadian Registered Safety Professionals (CRSP)
  • Members with Association of Canadian Management Professionals
  • CPO Approved Working at Heights Training Providers
  • Certified Trainers in First Aid & CPR
  • Emergency Response and Crisis Scene Management Experts
  • Privileged Critical and Fatal Injury Forensic Investigation Experts
  • Networking connections to top Legal and Paralegal
  • Providing Expert OH&S Advice since 1989

Senior Management Team



Roger Tickner is a seasoned health and safety expert who has helped position Tickner and Associates as a leader in the ever-changing landscape of workplace health and safety compliance. Roger has built his reputation on the back of 40 years of professional experience. As a top professional, his opinion and judgement are respected, trusted and highly sought after by employers, government and labour. He is a past chair of the Board of Canadian Registered Safety Professionals and in 2020 was appointed by the Minister of Labour, Training and Skills Development to serve on the Prevention Council of Ontario. Roger is highly skilled public speaker and sought after on all matters of health, safety, WSIB and workplace compliance across Canada and the United States. His decades long philanthropic efforts continue to impact a wide variety of charitable causes.

George PapadakosCRSP, B.A, RPT

Vice President

George Papadakos currently serves as the Vice President. George is a graduate of Michigan State University with a degree in Business. George is a Canadian Registered Safety Professional (CRSP), a Canadian Registered Training Professional (RPT) George is involved in day to day aspects of our accident prevention mandates and is a key member of our critical / fatal investigations team acting as a lead investigator and gatekeeper. George also delivers certified training in Working at Heights and First Aid / CPR.

George ChristopoulosB.A. Eng.

Director of Communications

George Christopoulos is a York University graduate with an English Major and is currently Director of Communications at Tickner. He started his career as a Toronto Sun reporter covering crime and municipal affairs. He later became a senior member of the Toronto Police Service’s communications team, and then Press Secretary for Toronto Mayor Rob Ford. George is an expert in brand protection and critical corporate communications. George also heads our lobby group with the City of Toronto for key clients. He is a key member of our Critical Emergency Response Team in charge of media control. His expertise has been tested and is a proven asset to our clients.

Kristen MilliganRPT

Manager of Business Development

Kristen Milligan is the Manager of Business Development for Tickner Safety. An integral voice on the Senior Management team, Kristen is a graduate in Occupational Health and Safety from Toronto Metropolitan University and a Canadian Registered Training Professional (RPT). Kristen is a Senior Team Lead and a key investigator on our Critical Emergency and Fatality Response team. As a seasoned OHS professional, Kristen also delivers certified training in Working at Heights, WHMIS, and Corporate Safety Initiatives. She helps clients build and implement safety programs resulting in enhanced safety cultures. Her expertise has been tried and tested and she is a proven asset to our clients.



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