Ferris
articled with the Vancouver firm of Guild, Yule and was
called to the Bar in 1955. He then went into private practice in Vancouver with the firm of Davis and Co. He practised there for 24 years, and then in 1979 transferred to Boughton, Peterson, Yang, Anderson, staying there until his death. Ferris specialised in civil litigation, developing a reputation as one of the leading counsel in British Columbia. He was interested in labour and banking matters, but also appeared in a variety of civil proceedings and administrative law matters. He appeared regularly in civil jury trials, and towards the end of his career focussed on insurance law from the defence perspective. He appeared in all levels of courts, including the
Supreme Court of Canada, as well as administrative tribunals. He had a reputation of quickly mastering his brief prepared by his juniors, and as an expert in cross-examination. Although he enjoyed the courtroom, he recognised that it was often better for his clients to settle a case. In recognition of his excellence as counsel, he was appointed
Queen's Counsel in 1969. ==Leadership in the Canadian Bar Association==