Vic graduated from the University of Saskatchewan Law School in 1982 and was admitted to the practice of law in 1983 with the law firm Olive Waller Zinkhan & Waller. In 1988 he became a partner and has practiced primarily in the area of bankruptcy and insolvency as well as debtor/creditor matters on behalf of a number of financial institutions and particularly Credit Unions in the Province of Saskatchewan.

In 2004 he was elected a Bencher of the Law Society of Saskatchewan and served the maximum two full terms, concluding in 2009. Vic was President of the Law Society of Saskatchewan and served as the Society's President in its Centennial year of 2007. Besides service to the Law Society, Vic was a Commissioner with the Saskatchewan Legal Aid Commission for over five years and was also a member of the Provincial Court Judicial Council and the Law Society Representative on the Provincial Access to Justice Task Force. He also served on a number of committees including Provincial Court's Judges Sub-Committee on Appointing a Chief Judge of the Court. He was awarded a Queen's Counsel designation in 2006.

While serving as President of the Law Society of Saskatchewan and as a member of the Provincial Access to Justice Task Force, Vic was instrumental in creating Pro Bono Law Saskatchewan as a response to the Task Force Report. He was a founding Director as well as the first President of PBLS. He continues to serve as President of PBLS.

In 2010 Vic Dietz resigned from the partnership of Olive Waller Zinkhan & Waller LLP and was appointed Counsel to the firm and acts in that regard while also providing legal services to the Law Society of Saskatchewan as a Practice Advisor and as counsel for The Canadian Academy of Recording Arts and Sciences which hosts the JUNO Awards each year.