The best class action lawyers in Chicago in 2026 include DiCello Levitt for national plaintiffs' cases, Stephan Zouras for overtime and biometric privacy, Wallace Miller for consumer and product cases, Clifford Law Offices and Romanucci & Blandin for large injury actions, and Vaziri Law and Walner Law Firm among smaller practices.
| Firm | Office | Focus | Best for |
|---|---|---|---|
| 1. DiCello Levitt | The Loop | Class actions and complex litigation | National consumer and business cases |
| 2. Stephan Zouras | The Loop | Wage and biometric privacy class actions | Workers and people with privacy claims |
| 3. Wallace Miller | The Loop | Consumer, privacy and product cases | Economic harm and defective products |
| 4. Clifford Law Offices | The Loop | Class actions and transportation | Mass injury events |
| 5. Romanucci & Blandin | River North | Mass tort and class actions | Mass tort and institutional harm |
| 6. Vaziri Law | The Loop | Class actions and business disputes | Smaller or local class cases |
| 7. Walner Law Firm | Northbrook & Bannockburn | Class actions and tort litigation | Consumers and referring lawyers |
Class actions suit cases where many people suffered the same small or similar harm. Illinois is unusually active for privacy cases because of its Biometric Information Privacy Act, which has led to many lawsuits over fingerprint and face scans. If you've received a settlement notice, read it closely: you may have a deadline to claim, opt out or object, and you don't need a lawyer simply to file a claim.
National plaintiffs' firm with a Chicago office.
DiCello Levitt describes itself as a firm dedicated to class action, business-to-business, public client, whistleblower and personal injury litigation, with an office at 10 North Dearborn Street.
Good to know: If you're a business, ask about its business-to-business practice.
10 N Dearborn St, 6th Floor, Chicago, IL 60602
Biometric privacy and overtime focus.
Stephan Zouras works on class and collective actions over overtime and wages, and on biometric privacy and cybersecurity, from West Adams Street.
Good to know: Keep any record of fingerprint or face scans used at work.
222 W Adams St, Suite 2020, Chicago, IL 60606
Lists economic harm and privacy among its practice groups.
Wallace Miller has practice groups on economic harm, privacy, product defect and dangerous drugs. It's a sensible first call for consumers harmed by a product or data breach.
Good to know: Keep receipts and any notices from the company.
200 W Madison St, Suite 3400, Chicago, IL 60606
Large injury firm with a class actions page.
Clifford Law Offices lists class actions along with personal injury and aviation litigation, which suits events that harm a large number of people, such as transportation disasters.
Good to know: Individual injury claims may be better outside a class. Ask.
120 N LaSalle St, 36th Floor, Chicago, IL 60602
Trial firm with a mass tort group.
Romanucci & Blandin has a mass tort and class actions group. Mass torts differ from class actions, because each person's claim generally stays individual.
Good to know: Ask which structure fits your case.
321 N Clark St, Suite 900, Chicago, IL 60654
A smaller Loop practice.
Vaziri Law lists class action law with business and employment law. A smaller firm can be approachable for a local case that a national firm may not take.
Good to know: Ask how many class cases it has pending.
111 W Washington St, Suite 1500, Chicago, IL 60602
A Northbrook practice with class action resources.
Walner Law Firm lists class action law, tort litigation and contract law, and publishes class action FAQs for consumers.
Good to know: Read its FAQ before you call.
555 Skokie Blvd, Suite 250, Northbrook, IL 60062
Usually nothing up front. Class counsel generally works on contingency, and the court must approve any fee, which is paid from the recovery or by the defendant.
It depends. Opting out preserves your right to sue on your own but gives up the settlement payment. It often makes sense only if your individual damages are large. A lawyer can advise you before the deadline.
The Illinois Biometric Information Privacy Act regulates how private companies collect and store biometric identifiers such as fingerprints and face geometry. Stephan Zouras and other firms on this list work on these cases.