Atty. Gary Thomas Jansen
Gary Thomas Jansen is a lawyer practicing professional liability, premises liability, construction litigation and 2 other areas of law. Gary received a B.S. degree from Northern Illinois University in 1981, and has been licensed for 42 years.
Construction Litigation & More Attorney · Serving Chicago, IL · 42+ Years Experience
Profile Summary
About Gary Thomas Jansen at a Glance
Gary Thomas Jansen is a Member based in Chicago, Illinois. They have 42+ years of legal experience, licensed to practice since 1984. Their practice focuses on construction, slip & fall, product liability, and insurance. Admitted to practice in Illinois (1984) and Indiana (2008). Educated at DePaul University (J.D., 1984) and Northern Illinois University (B.S., 1981). Recognitions include Peer Reviewed. Active member of Chicago and Illinois State Bar Associations Illinois Association of Defense Trial Counsel Defense Research Institute. Serves clients in Chicago, IL and the surrounding metropolitan area.
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About Gary Thomas Jansen
- Gary Thomas Jansen is a lawyer practicing professional liability, premises liability, construction litigation and 2 other areas of law
- Gary received a B.S. degree from Northern Illinois University in 1981, and has been licensed for 42 years
- Gary practices in Chicago, IL
Practice Areas Explained
Gary Thomas Jansen's Areas of Legal Practice
Each practice area below reflects the types of cases Gary Thomas Jansen handles, with a practical overview of what that area of law involves and how it may apply to your situation in Chicago.
Construction Law in Chicago
Gary Thomas Jansen is one of 40,302 construction attorneys indexed nationally. Browse construction attorneys in Illinois →
Slip & Fall / Premises Liability in Chicago
Gary Thomas Jansen is one of 29,187 slip & fall attorneys indexed nationally. Browse slip & fall attorneys in Illinois →
Product Liability in Chicago
Gary Thomas Jansen is one of 65,610 product liability attorneys indexed nationally. Browse product liability attorneys in Illinois →
Insurance Law in Chicago
Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.
Gary Thomas Jansen is one of 120,903 insurance attorneys indexed nationally. Browse insurance attorneys in Illinois →
Jurisdictional Context
Why Local Counsel Matters in Chicago
Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.
Chicago Courts and Legal Process
Choosing a Chicago-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.
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Professional Profile
Why Clients in Chicago Choose Gary Thomas Jansen
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Gary Thomas Jansen's practice in the field of construction, slip & fall, product liability, and insurance.
Decade-Tested Legal Experience
Gary Thomas Jansen brings 42+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in Illinois and Indiana, Gary Thomas Jansen can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering construction, slip & fall, and product liability, Gary Thomas Jansen can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Chicago
A Chicago-based practice means Gary Thomas Jansen attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
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Gary Thomas Jansen's Practice Areas & Specializations
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