Timothy D. O’Neil

  • Partner

Timothy D. O’Neil

  • Partner

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Practice Areas:

  • Municipal Law
  • Workers’ Compensation
  • Personal Injury
  • Eminent Domain
  • Law Enforcement Organized Labor
  • Complex Litigation


When it comes to seeing municipal law from multiple angles, attorney Timothy D. O’Neil can claim a deep, knowledgeable background during his quarter-century of legal work.

Tim has served as city attorney in both St. Charles and Batavia, working to protect their interests in areas ranging from prosecuting ordinance violations to rewriting complicated impact fee rules. He spent five years as an Assistant State’s Attorney in Kane County, and acted as a special prosecutor for the Kane County Sheriff’s Merit Commission. He takes the most pride, however, his “labor of love” - representing union law enforcement officers in contract negotiations and defending them against grievances.

“They are treasured and valued employees, and I like to think of myself as protecting the protectors,” O’Neil said. “We want to make sure that management doesn’t govern with a heavy hand.”

Born in Aurora in 1956, Tim has spent his entire life and legal career based within Kane County’s borders. The benefit of that history is an endless list of people he knows and an ability to use those contacts in a variety of ways beneficial to his clients. Understanding the political landscape that can creep into the legal arena gives O’Neil an added edge only found among county natives.

He gravitated toward working with police unions because of what he learned as a prosecutor, and counts his work with the Aurora police union as one his most satisfying experiences. “That was a very difficult time in Aurora. Ultimately, we prevailed on both the contract and the individual disciplinary issues,” he said.

Tim earned his undergraduate degree from St. Norbert College in 1978 and his law degree from Northern Illinois University in 1985, the same year he was admitted to the Illinois bar. In 1991, he was also authorized to practice in the Northern District of Illinois in the U.S. District Court.

He is a member of the Kane County Bar Association and the Illinois Trial Lawyers Association. Within the community, Tim has worked with the Boy Scouts of America, Geneva Library Foundation, Geneva Mental Health Board and the Kane County Community Opera organization.


  • Northern Illinois University College of Law, DeKalb, Illinois
    • J.D. – 1985
  • St. Norbert College
    • B.A. – 1978

Bar Admission

  • Illinois, 1985
  • U.S. District Court Northern District of Illinois, 1991

Pro-Bono Activities

  • Boy Scouts of America
  • Geneva Library Foundation
  • Geneva Mental Health Board
  • Kane County Community Opera organization

Past Positions

  • State’s Attorney in Kane County, Assistant
  • Kane County Sheriff’s Merit Commission, Special Prosecutor

Professional Associations

  • Kane County Bar Association, Member
  • Illinois Trial Lawyers Association, Member
  • Illinois Institute for Local Government Law, Member
  • Kane County Sheriff’s Merit Commission, Special Prosecutor