Don Jonker is a well-respected attorney disciplinary counsel and aggressive trial lawyer, with over 20 years of proven experience in both state and federal court. His practice includes trial work at the appellate and federal level.


  Attorney Disciplinary Defense

  Professional Responsibility

  Personal Injury
Away from the Courthouse Don is a sports enthusiast and enjoys family-oriented activities with his wife and three children. Don is also an amateur astronomer.
Bachelor of Art
University of Illinois at Chicago
Chicago, Illinois, 1980
Major: Criminal Justice

Juris Doctor
Thomas M. Cooley Law School
Magna Cum Laude
Lansing, Michigan, 1984

1984 - Admitted to the Illinois Bar
Donald P. Jonker
Don Jonker joined Rathbun, Cservenyak & Kozol LLC in 2005 as an associate. He is a native of Chicago, Illinois, and a 1975 graduate of Brother Rice High School.   Read More

"You've put a lot into earning your license. Don't let legal and ethical questions arising out of the Rules of Professional Conduct hurt your practice or your clients case."
Don Jonker

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