Patrick S. O’Brien

 St. Louis Personal Injury & Workers’ Compensation Attorney

| Devoted & Successful Trial Lawyer of Injured People for More Than Thirty Years.

Attorney Patrick S. O’Brien has dedicated his professional career to helping those who have been injured by another’s negligence on the road or on the rail and deserve ethical, experienced, and effective representation. With his national law practice, O’Brien has tried cases to verdict in 16 states and represented clients who resided in 30 states. (For states in which he is not licensed to practice law, he applies to be admitted pro hac vice*.) O’Brien has represented railroad workers from all crafts. He has developed a specialty in handling occupational injury and toxic exposure illness claims under the Federal Employers’ Liability Act (FELA) and has achieved numerous, substantial verdicts against various railroads. Patrick S. O’Brien has a strong record of recovering full and fair compensation for medical bills, lost wages, future earnings, and pain and suffering for his clients.

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| A Message From Patrick S. O’Brien:

I consider myself a very lucky man to be doing something I truly enjoy: representing people who need help. Having said that, I am truly amazed at how many attorneys treat their clients and handle their cases. We all have horror stories that are shared when discussing lawyers; “He wouldn’t return my calls”; “He didn’t seem to care about what I thought was important”; “He didn’t understand what this incident/injury has done to my family.”

At my firm, the client comes first. When you hire me, I handle all aspects of the case from start to finish. I have great staff to help me, but you can always talk to me whenever you want. My cell phone number is on my card and the website, and my policy has always been that all client calls are returned by the end of the business day unless I am in trial. I will still call you even though I am in trial, but it will be late in the evening. I return calls when I am on vacation or even on holiday (I have talked to clients on Christmas Eve).

Many attorneys try to make their clients believe that their case is so complex that they don’t need to know what’s going on. In our office, we try to demystify the legal issues and welcome the client’s input in a true team approach that will guarantee the best outcome for each client. I have represented over a thousand clients over the years who have had injuries so serious that they could not return to work. I try to walk in my client’s shoes and put myself in their place when evaluating his/her care and get input from my clients while doing so.

At the end of the day, the decision to settle or try the case is the client’s. I will give you my opinion, but the final decision is yours. Most attorneys feel that their role is to control their client. Our approach is to give you the information you need to make a reasonable decision concerning resolution of your case. We have testimonials you can review, and I am willing to give you contact information of other clients to check out our unique approach in handling your claim.

Please contact me at 866-333-4504 to discuss your case.

| States and Courts in which Patrick S. O’Brien is licensed to practice law

(followed by year of admission):

  • Missouri, 1979

  • Illinois, 1980

  • Minnesota, 1986

  • U.S. Court of Appeals 7th Circuit, 1985

  • U.S. District Court Southern District of Illinois, 1983

  • U.S. Court of Appeals 8th Circuit, 1988

  • U.S. Court of Appeals 3rd Circuit, 1998

  • U.S. Court of Appeals 6th Circuit, 2009

  • U.S. Court of Appeals 10th Circuit, 2018

  • U.S. District Court Western District of Missouri, 1979

  • U.S. District Court Eastern District of Missouri, 1980

  • U.S. District Court Northern District of Illinois, 1989

  • U.S. District Court Central District of Illinois, 2006

  • U.S. District Court Eastern District of Oklahoma, 2009

  • U.S. District Court District of Colorado, 2011

  • U.S. District Court District of Nebraska, 2012

| Patrick S. O’Brien Areas of Practice

  • Railroad worker injury/FELA

  • Plaintiff’s personal injury

  • Plaintiff’s Workers Compensation

  • Auto injuries

  • Trucking injuries

  • Product liability

  • Occupational injuries

  • Asbestos exposure

  • Solvent exposure

  • Toxic fume exposure

| Field Investigators

| Amy M. Raterman

Breese, Illinois

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| Want to Get to Know Us Better?

For information on all of our investigators, click the button below for a full listing. If you already know who you are looking for, click on the individual directly.

Click to View | All Our Field Investigators
Stephen Jackson
Todd Reeves
Fred Weaver
R. Timothy Windsor
Amy M. Raterman

| Awards and Accreditations

Best Personal Injury Attorneys

Patrick S. O’Brien has been recognized by Best Lawyers® as a Best Personal Injury Attorney 2000-2023

5 Star Rated

He has consistently received a 5.0 out of 5, the highest possible rating for professional ethics and legal ability awarded by the organization's peer review rating system.

AV® Preeminent™

Patrick S. O’Brien has been designated an AV® Preeminent™ Peer Review Rated attorney by Martindale-Hubbell annually since 1995.

Best Lawyer & Best Law Firm

He is also proud to have been selected a “Best Lawyer” in America for Railroad Law 2013-2023. His Law Offices of Patrick S. O’Brien, LLC has been selected as a “Best Law Firm” in America in 2014, 2015, 2016, 2017 and 2018.


Patrick is proud to have attained a 10.0 (superb) rating from