Throughout a busy professional career that got underway in the early '60s, Rodrigue Tremblay has functioned as economist, professor, statesman, writer, columnist and, increasingly, as philosopher and humanist. His versatility in all of these areas has resulted in well over 300 articles written under his name and 30 books dealing with economics and finance, some also tackling moral and political issues.

Rodrigue Tremblay is a former Woodrow Wilson fellow, a Ford International Fellow and winner of the Condorcet Prize. He is now professor emeritus of economics and of international finance at the University of Montreal, after having occupied the positions of full professor of economics at the University of Montreal, president of the North Economics and Finance Association, president of the Canadian Economics Society, and advisor to numerous organizations and governments. He has traveled extensively in the Middle East, in North Africa and in sub-Sahara Africa.

In 1968, Dr. Tremblay was adviser to the Bank of Canada. In 1969, he wrote the basic textbook "Economics", which has been reedited many times since. In 1969-70, he acted as chief economist of the Commission of Inquiry into the Quebec liquor trade, whose report proposed that wine be sold in private grocery stores in addition to the Quebec Liquor Board stores. In 1970, he proposed the creation of a North American Common Market in his book "Indépendance et marché commun Québec-États-Unis".  From 1973 to 1976, Rodrigue Tremblay was Chairman of the Department of Economics at the University of Montreal.

In 1975, he was elected President of the Canadian Economic Society. From 1970 to 1975, he was also adviser to the countries of the West African Monetary Union and contributed to rewriting its Statutes. From 1976 to 1981, Rodrigue Tremblay served in the Quebec National Assembly as member of parliament for the Gouin riding in Montreal. From 1976 to 1979, he acted as Minister of Industry and Trade in the Quebec government. Among the laws he sponsored was Bill 21 which permitted wine sales in grocery stores, for the first time in Quebec and in Canada. He resigned from politics on April 13, 1981 and resumed his academic career at the University of Montreal. In 1986, he was elected President of the North American Economics and Finance Association (NAEFA). In 1995, he became vice-president of the International Association of French-speaking Economists (AIELF), whose 52nd International Congress was held in Montreal in May 2001. His book "The New American Empire" was published simultaneously in English and in French ("Le nouvel empire américain") in the USA and in Europe.

In 2010, Prometheus Books published Dr. Tremblay's book "The Code for Global Ethics". The book was published as "Le Code pour une éthique globale" in Montréal by Liber, and is also available on Amazon France.

In addition to his professorial and professional activities, Rodrigue Tremblay has been active in public speaking about politics and the economy, and writes a blog that is reposted and shared on thousands of sites.

Rodrigue Tremblay is a Canadian Who's Who; International Who's Who and Who's Who of International Scientists.