In 1976, he launched his own private practice focusing on civil liberties cases which on occasion provided representation on a pro bono basis.

He was also an entrepreneur; he founded a small oil and gas company, co-founded the entertainment promotion firm Brimstone Productions and engaged in real estate.

In the 1986 Alberta general election, he ran as a Liberal in the riding of Calgary-Buffalo and defeated incumbent Brian Lee of the Progressive Conservative Party.

[5] The foundation offers internships and scholarships for students studying the field of Leadership and Law, publishes material pertaining to civil rights, and supports initiatives in the community.

"[6][7] In 2012, Chumir was posthumously honored by the Calgary Stampede Foundation with the centennial edition of the Western Legacy Award.