Atty. Peter A. Sink
PETER A. SINK, a Shareholder with the Firm and chair of its worker’s compensation defense practice group, began his legal career as a Plaintiff/Petitioner litigation attorney.
Attorney · Serving Chicago, IL · 33+ Years Experience
Profile Summary
About Peter A. Sink at a Glance
Peter A. Sink is a Partner based in Chicago, Illinois, practicing at Leahy, Eisenberg & Fraenkel, Ltd.. They have 33+ years of legal experience, licensed to practice since 1993. Admitted to practice in Illinois (1993). Educated at The John Marshall Law School J.D. (—) and Illinois State University B.A. Political Science (—). Serves clients in Chicago, IL and the surrounding metropolitan area.
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About Peter A. Sink
- PETER A. SINK, a Shareholder with the Firm and chair of its worker’s compensation defense practice group, began his legal career as a Plaintiff/Petitioner litigation attorney
- He was responsible for all aspects of case management from initial interview of the client to the selection of jurors and trial
- Mr. Sink brings invaluable experience to the Defense/Respondent side of law with his intimate knowledge of the mindset of the arguments and legal strategy employed by opposing counsel
- This experience gives the respondent client added leverage in the negotiation and closure of claims files
- Mr. Sink's primary responsibilities include case management from initial assignment through arbitration and review, including initial case analysis
- drafting of initial reports to clients, drafting of quarterly status reports and all client correspondence
- researching and drafting memoranda on legal and medical issues
- conducting settlement negotiations
- preparing and presenting witnesses and physicians for depositions and trial testimony
- preparing motions, proposed decisions, statements of exception and Circuit Court briefs
- presenting motions and oral arguments before Arbitrators and Commissioners
- and litigating Arbitration hearings, as well as bench trials in the civil courts
- He has significant litigation and successful jury trial experience, both at the Illinois Worker's Compensation Commission and in the various local Circuit Courts
- Mr. Sink has also been an invited lecturer for various corporations across the country and is an active member of Illinois State Bar Association, Illinois Workers' Compensation Lawyers Association, and Chicago Bar Association
- Mr. Sink is admitted to practice in the State of Illinois and the United States District Court for the Northern District of Illinois
- Mr. Sink is a graduate of the Illinois State University in Political Science (B.A.), and The John Marshall Law School (J.D.)
- Memberships Member of Federal District Court Bar, Northern District of Illinois, December 2006 Illinois State Bar Association Illinois Workers' Compensation Lawyers Association Chicago Bar Association
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 Peter A. Sink
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 Peter A. Sink's practice.
Decade-Tested Legal Experience
Peter A. Sink brings 33+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Local Presence in Chicago
A Chicago-based practice means Peter A. Sink 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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Education & Law School Background
Bar Admissions & Licensed Jurisdictions
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