The fifth-largest state in the U.S., Illinois is home to nearly 13 million people, almost 3 million in Chicago alone. With more than 60,000 attorneys in the state, it can be difficult for individuals considering their legal options to select the best attorney for their class action lawsuit. Making sure you have the right team on your side is crucial, especially when going up against a major corporation or other huge organization, which is common in class action cases.

If you’ve been injured, defrauded, or suffered any other type of loss and believe you may be eligible for compensation as part of a class action lawsuit, consider contacting one of the law offices or attorneys on this list. You will typically be able to receive a free evaluation of your case, and with most class action lawsuits, attorneys only get paid if you win your claim.

1. Simmons Hanly Conroy LLC

230 W Monroe St Ste 2221, Chicago, IL 60606

Practice Areas: Class Action, Prescription Opioids, Mesothelioma, Environmental Litigation

Firm Size: Large

With offices in Chicago and Alton within Illinois, as well as locations in New York, California, and Missouri, Simmons Hanly Conroy LLC is a large, Illinois-based law firm with a national reach. Since its founding in 1999, Simmons Hanly Conroy has helped recover more than $9 billion in judgments and settlements for clients.

Their primary practice area is mesothelioma and asbestos, and founding partner John Simmons started the firm by fighting for clients diagnosed with asbestos-related illnesses. Since then, the practice has expanded in size and scope to include individual and class action cases related to consumer fraud, sexual abuse, environmental contamination, and dangerous drugs and medical devices.

Community outreach efforts by Simmons Hanly Conroy include a pledge to donate more than $20 million to cancer research, as well as the support of groups like the American Lung Association, American Cancer Society, Salvation Army, United Way, Boys and Girls Club, and more.

2. Clifford Law Offices

120 North LaSalle St 31st Floor, Chicago, IL 60602

Practice Areas: Class Action, E-Cigarettes, Talcum Powder, Personal Injury, Construction Accidents

Firm Size: Medium

Clifford Law Offices opened their doors in 1984, quickly making a name for themselves in the field of airline disasters. Since then, the firm’s partners and attorneys have been involved in well over $2 billion worth of judgments, verdicts, and settlements in cases related to traffic accidents and medical malpractice to corporate corruption and aviation accidents. Attorneys at the firm are currently investigating potential class actions and whistleblower claims related to Juul e-cigarettes, Pella Windows, the NCAA, General Motors, and talcum powder companies.

Partners, associates, and staff at the firm are also involved in many charitable community causes, including the Chicago Food & Shelter Project, which has helped distribute thousands of meals to those in need, as well as the Chicago Police Memorial Foundation’s Run/Walk to Remember, which provides assistance to family members of police killed or injured in the line of duty.

3. Cooney & Conway LLP

120 N Lasalle St Suite 3000, Chicago, IL 60602

Practice Areas: Class Action, Serious Injuries, Roundup, Mesothelioma, Birth Defects, Sexual Abuse

Firm Size: Medium

Cooney & Conway LLP opened its doors in 1973 to represent two mesothelioma patients who had been exposed to asbestos via their work in a northern Indiana oil refinery. Since then, the firm’s focus on asbestos and mesothelioma cases have helped their clients secure verdicts and settlements totaling nearly a billion dollars from companies like Pfizer, Shell, and Owens Corning. Partner John Cooney was also involved in bankruptcy cases that established trusts worth more than $20 billion combined.

While the firm’s primary focus is on mesothelioma and other asbestos-related claims, Cooney & Conway attorneys have been involved in individual and class action cases related to exposure to the weedkiller Roundup, victims of police misconduct, and individuals who suffered abuse at the hands of religious clergy or Scout leaders.

4. Zimmerman Law Offices

77 W Washington St STE 1220, Chicago, IL 60602

Practice Areas: Class Action, Defective Products, Personal Injury, Wrongful Death, Wells Fargo

Firm Size: Small

Founded in 1996 by Chicago attorney Thomas A. Zimmerman, Zimmerman Law Offices focuses on class action lawsuits covering areas including defective products, fraudulent business practices, data breaches, and more. Other major practice areas include medical malpractice, personal injury, and auto accidents. Attorneys with Zimmerman Law Offices have successfully secured judgments, verdicts, and settlements totaling more than $300 million on behalf of their clients.

The firm has been involved in successful class actions against a range of companies, including Monster HDMI Cables, ADT, Wells Fargo, Comcast, Chicago Sun-Times, and United Airlines.

5. The Collins Law Firm, P.C.

1770 Park St #200, Naperville, IL 60563

Practice Areas: Personal Injury, Groundwater Contamination, Class Action, Business Disputes

Firm Size: Medium

From its office in Naperville, The Collins Law Firm, P.C., has distinguished itself as a national leader in environmental class action litigation, or so-called “toxic torts.” Collins attorneys have been involved in recovering almost $100 million in environmental contamination claims over the firm’s nearly 30-year history. Cases in this area have covered TCE and PCE (two volatile chemical compounds), as well as drinking water and landfill contamination, among many others.

In 2020 alone, The Collins Law Firm secured more than $105 million in judgments and settlements on behalf of clients, and the attorneys and staff members give back in more ways than one, from pro bono legal services to volunteerism and working in the community.

6. Keogh Law Ltd.

55 W Monroe St #3390, Chicago, IL 60603

Practice Areas: Class Action, Identity Theft, Robocalls, Minimum Wage, Debt Collection

Firm Size: Small

Keogh Law Ltd. Is one of the younger major firms in Illinois, opening its doors about 13 years ago. From their Chicago offices, Keogh Law’s primary practice focus is on consumer protection, including fighting against robocalls, telemarketers, and other illegal practices that unfairly target consumers. The firm’s work on behalf of consumers has earned awards from organizations like the National Association of Consumer Advocates.

Keogh attorneys’ class action experience includes cases against huge corporations including Walmart, Best Buy, Bank of America, and Wells Fargo, and they’ve represented clients in cases related to identity theft, debt collection harassment, and more.

7. Ankin Law Office

10 N Dearborn St #500, Chicago, IL 60602

Practice Areas: Class Action, Personal Injury, Social Security Disability, Automobile Defects, Mesothelioma

Firm Size: Medium

Among the most storied law firms in Illinois, Ankin Law Office has been in practice since 1940, representing more than 25,000 clients in that time. Though the firm has a primary focus on workers’ compensation and personal injury cases, it’s also been involved in class action lawsuits related to employment claims, securities and investment fraud, consumer protection, automobile defects, environmental contamination, and more.

Ankin Law Office is unique in that it offers not only English- and Spanish-speaking staff members and attorneys, but some who speak Polish as well, which is owing to the firm’s deep roots in Chicago, where Polish is the third most-spoken language in homes.

8. Leiter Law Offices

63 W Jefferson St #203, Joliet, IL 60432

Practice Areas: Class Action, Personal Injury, Medical Malpractice, Workers’ Compensation

Firm Size: Sole Practitioner

Attorney Gregory Leiter of Leiter Law Offices has more than 25 years’ experience in cases related to medical negligence, workplace accidents, and automobile crashes. He’s the sole attorney at his Joliet-based law firm, and his primary practice focus is on personal injury claims, but other practice areas include medical malpractice and workers’ compensation.

Leiter has also represented clients in individual and class actions related to medication side effects, drug packaging, product liability, work-related illnesses, civil rights violations, and consumer debt protection.

9. Horwitz Horwitz & Associates

25 E Washington St Ste 900, Chicago, IL 60602

Practice Areas: Class Action, Consumer Protection, Motor Vehicle Accidents, Personal Injury

Firm Size: Medium

A mid-sized Chicago firm, Horwitz Horwitz & Associates is one of the city’s oldest. The firm first opened in 1924 and has remained in the Horwitz family for three generations. Their practice focus is on personal injury and workers’ compensation claims, and the firm holds the distinction of winning the largest personal injury verdict in the history of Illinois. Horwitz Horwitz & Associates attorneys have a combined 350 years of legal expertise.

The firm has successfully represented clients in class actions against major corporations like IBM and General Motors, helping clients win judgments, verdicts, and settlements totaling well over $100 million. Horwitz Horwitz & Associates also offers Polish- and Spanish-language services, as well as having an office in Chicago as well as one in Joliet.

10. Cates Mahoney LLC

216 W Pointe Dr A, Swansea, IL 62226

Practice Areas: Class Action, Automobile Accidents, Medical Malpractice, Product Liability, Environmental Exposure

Firm Size: Small

Cates Mahoney LLC began its life as The Cates Law Firm in 1977, and today the southern Illinois law firm’s primary practice areas include class action, mass torts, employment cases, and personal injury. Cates Mahoney was a crucial part in winning a $95 million judgment in a sexual harassment case, and the firm has been involved in many other employment-related cases.

Class actions and mass torts attorneys with Cates Mahoney have handled cases related to securities fraud, defective products, environmental contamination, corporate fraud, and deceptive business practices.

Get a FREE Claim Evaluation