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I am a workers’ compensation and serious injury attorney with over 35 years of experience advocating for injured individuals in Missouri and Illinois. Before becoming an attorney, I was a Registered Nurse — and that medical foundation continues to shape how I practice law today.
My career began representing insurance companies and employers. That experience gave me an inside understanding of how claims are evaluated, defended, and often minimized. Today, I use that knowledge to advocate exclusively for injured workers and accident victims.
As a nurse-turned-lawyer, I approach every case with both clinical insight and legal precision. I understand medical records, impairment ratings, causation issues, and the long-term impact injuries have on a person’s ability to work and live fully. This dual background allows me to identify strengths in a case that others may overlook.
My practice focuses primarily on:
• Missouri and Illinois Workers’ Compensation
• Permanent Total Disability claims
• Complex and medically intensive cases
• Serious personal injury matters
I lead a focused, all-female firm committed to compassionate, highly strategic representation. My clients are never treated as files or numbers. Injury cases are deeply personal — they affect income, identity, family stability, and peace of mind. I take that responsibility seriously.
I believe strong advocacy requires both strength and empathy. As a nurse, I cared for patients. As an attorney, I fight for them.
3
Practice Areas
35 years | 25,000 cases
35 years | 5,000 cases
35 years | 200 cases
Free Consultation
$0 first 15 minutes
25%-35%
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Chat withState: Colorado
Acquired: 2003
No misconduct found
State: Illinois
Acquired: 1992
No misconduct found
State: Missouri
Acquired: 1991
No misconduct found
425 North New Ballas Road, Saint Louis, MO, 63141
24 Client Reviews
Showing 1 - 4 of 4 reviews | Insurance
Posted by Elmer | February 16, 2012 | Insurance
Very Nice Law Firm
I hired Cynthia to represent me in 2010. I fell on ice at work and tore my rotator cuff all the way through. I was tired of dealing with the insurance company claims adjuster. She just wasn’t that nice, she never returned my calls, kept delaying things. It was so nice to just hand the whole mess t...
Posted by Sherri | February 13, 2012 | Insurance
Great Experience
I always hoped I would never need a personal injury lawyer. The commercials on television are so sleazy, I thought they were all “ambulance chasersâ€. Well, then my car was rear-ended by a pick up truck going 55 miles an hour while I was at a dead stop. I happened to be on the job, as I am a Sa...
Posted by Christine | February 06, 2012 | Insurance
Very Smooth Experience
I had a great experience with Cynthia Hennessey and her office. I fell at work and broke my ankle in three places requiring surgery with plates and screws. My recovery was long and drawn out. Cynthia was always great with keeping me posted as to what was happening with my case. I liked that she han...
Posted by Sally | January 16, 2012 | Insurance
Highly Recommended
I knew that I wanted a female attorney to handle my case. I am convinced that women are more organized and prepared and handle most things better than men. I was extremely happy to find Ms. Hennessey. She was always extremely friendly, and kind. She returned my calls and always made me feel like she ...
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2019
Client Champion Award, Martindale-Hubbell
1997 - Present
Attorney, Hennessy Law firm, LLC
1990 - 1997
Attorney, Evans & Dixon, LLC
Member
Member
Member
Permanent Total Disability Award Secured – Lifetime Benefits Granted (ALJ Reversed)
1991
JD - Juris Doctor
1985
BA - Bachelor of Arts
N/A
Missouri and Illinois Workers' Compensation
2026
2025
2025
2025
English