Since his admission to the Quebec Bar in 1977, Mr. Leduc has always worked in the private sector.  He was co-founder of Mercier Leduc in 1980, and is responsible for the litigation sector of the firm.

The essential part of his practice is related to representations before all courts and at all administrative levels throughout our country.  Mr. Leduc has and continues to represent his clients, mainly before the Superior Court of Quebec, the Court of Appeal of Quebec and the Supreme Court of Canada.  He possesses an extensive experience in the field of ethics and disciplinary law and he pleads regularly before disciplinary committees of various professional orders, as well as before the Tribunal of Professions.  He has also acted as president on various disciplinary committees, namely for the Quebec Bar, the Collège des médecins, the Order of Engineers of Quebec and the Ordre des  infirmières et infirmiers du Québec.

Since 1983, Mr. Leduc has been teaching at L’École du Barreau du Québec in the fields of Evidence, Obligations, Contracts and Sureties. He has acted as speaker at many conferences in those same fields of law and was responsible for the teaching of the Civil Law II sector of L’École du Barreau du Québec.

He has been involved over the years with the Chamber of Commerce of Saint-Laurent for which he acted as president in 1992-1993.

He has devoted himself deeply within the heart of his professional order, the Quebec Bar. Mr Leduc has acted as president of numerous disciplinary committees, was on the Board of Directors of the Quebec Bar and on the Board of the General Council.  In May of 2001, he was elected vice-president of the Quebec Bar and was later named President of the Quebec Bar for the year 2002-2003.

In May 2008, the General Council of the Quebec Bar, on the recommendation of an independent committee, bestowed upon Mtre Claude G. Leduc, the title of “Advocatus Emeritus”. This title is attributed to lawyers whose excellent performance is recognized throughout the legal community for their remarkable contribution to the development of the legal profession.

His 30 years of experience ensure his clients a prompt and effective solution of their legal situations and procedures for which he is mandated, as well as the most professional representations before any Court.