Wentzville Law Firm

Cynthia Hennessey - Workers' Comp and Personal Injury Lawyer

Your Trusted Wentzville Law Firm

When you need legal representation in Wentzville, choosing the right law firm can make all the difference in your case outcome. At Hennessey Law Firm, we combine over 35 years of legal experience with unique medical expertise to provide Wentzville residents with unmatched representation in workers’ compensation and personal injury matters.

Why Choose Our Wentzville Law Firm?

Medical Expertise That Sets Us Apart

Attorney Cynthia Hennessey is not just a seasoned Missouri lawyer—she’s also a Registered Nurse with extensive medical knowledge. This dual expertise allows our law firm to review your medical records, understand complex diagnoses, and communicate effectively with healthcare providers in ways that other Wentzville law firms simply cannot match. When your case involves serious injuries, having an attorney who speaks the language of medicine gives you a significant advantage.

Former Insurance Company Attorney

Before dedicating her career to helping injured workers and accident victims, Attorney Hennessey worked as an insurance defense attorney. This inside knowledge of insurance company tactics and strategies now benefits our Wentzville clients. We know exactly how insurance adjusters think, how they attempt to minimize claims, and how to counter their strategies effectively. This experience makes our law firm uniquely positioned to fight for maximum compensation in your case.

Deep St. Charles County Roots

As a law firm serving Wentzville and St. Charles County, we understand the unique challenges facing workers and families in your community. From the growing manufacturing facilities and distribution centers to the expanding commercial areas throughout Wentzville, from construction sites to local businesses—we’ve represented injured workers and accident victims across Missouri. Our law firm’s deep knowledge of Missouri law, local employers, and court procedures ensures you receive truly professional representation.

Proven Track Record of Success

Over three decades, our law firm has successfully represented thousands of injured clients throughout Missouri, securing millions of dollars in compensation. We’ve taken on major insurance companies and corporations—and won. Whether it’s a workers’ compensation claim for a workplace injury or a personal injury case from a serious accident, our law firm’s results speak for themselves.

Legal Services We Provide in Wentzville

Workers’ Compensation Representation

Workplace injuries can devastate your family’s finances and future. Our Wentzville law firm handles all types of workers’ compensation cases, including brain and head injuries, back and spinal injuries, shoulder injuries, carpal tunnel and repetitive strain injuries, neck injuries, knee and joint injuries, construction accidents, occupational diseases, and psychological injuries.

If you’ve been injured on the job in Wentzville, you need a law firm that understands both Missouri workers’ compensation law and the medical realities of your condition. Learn more about our Wentzville workers’ compensation services.

Personal Injury Law

Accidents happen throughout Wentzville every day—from busy intersections to slip-and-fall incidents at local businesses. When negligence causes your injury, our Wentzville law firm fights to hold responsible parties accountable. We handle motor vehicle accidents, premises liability cases, catastrophic injuries, and wrongful death claims.

Our law firm’s combination of medical expertise and legal skill ensures that insurance companies cannot downplay the severity of your injuries or the impact on your life. Discover how we handle Wentzville personal injury cases.

What Makes Hennessey Law Firm Different from Other Wentzville Law Firms

Personalized Attention

Unlike large law firms that pass cases off to junior associates or paralegals, Attorney Cynthia Hennessey personally selects and handles every case. When you call our law firm, you speak directly with your attorney—not a call center or intake coordinator. This personalized approach ensures you receive the attention and advocacy your case deserves.

No Upfront Costs

We understand that injuries often come with financial stress. Our Wentzville law firm works on a contingency fee basis, meaning you pay no attorney fees unless we win your case. We advance all case costs, so you can focus on healing while we handle the legal battle.

Comprehensive Legal Strategy

Whether your case involves workers’ compensation, personal injury, or both, our law firm develops a comprehensive strategy to maximize your compensation. We identify all available avenues for recovery and pursue them aggressively on your behalf.

Missouri’s and Illinois’s Only All-Female Personal Injury and Workers’ Compensation Law Firm

We bring a unique perspective and approach to every case. Our clients appreciate our empathetic, supportive style combined with aggressive advocacy against insurance companies and corporations.

Commitment to Client Communication

Other law firms may leave you wondering about your case status. At Hennessey Law Firm, we prioritize clear, regular communication. You’ll always know what’s happening with your case and have direct access to your attorney.

Understanding Your Legal Rights in Wentzville

Workers’ Compensation Rights

If you’ve been injured at work in Wentzville, Missouri law provides important protections including medical care paid by your employer’s insurance, wage loss benefits, permanent disability benefits, mileage reimbursement, and vocational rehabilitation if needed.

Critical Deadlines: You must report your work injury to your employer within 30 days. Missing this deadline could jeopardize your entire claim. Contact our Wentzville law firm immediately to protect your rights.

Personal Injury Rights

Under Missouri law, if another person’s negligence caused your injury, you may be entitled to compensation for medical expenses, lost wages and diminished earning capacity, pain and suffering, property damage, rehabilitation and therapy costs, and in cases of gross negligence, punitive damages.

Statute of Limitations: Missouri generally allows five years to file a personal injury lawsuit, but sooner action preserves evidence and strengthens your case. Don’t wait—contact our Wentzville law firm today.

Serving Wentzville and St. Charles County

Our law firm proudly serves injured workers and accident victims throughout the region, including:

  • Wentzville – All residential neighborhoods, commercial districts, and industrial areas
  • Lake St. Louis – Surrounding lakeside community
  • Dardenne Prairie – Growing residential and commercial areas
  • O’Fallon – Nearby retail centers and neighborhoods
  • St. Peters – Adjacent communities and industrial zones
  • St. Charles – Historic areas and all of St. Charles County
  • Surrounding St. Charles County communities

No matter where your injury occurred in Wentzville or the surrounding St. Charles County area, our law firm provides the same dedicated, personalized representation that has made us successful for over three decades.

What to Expect When You Contact Our Law Firm

Step 1: Free Consultation

Contact our Wentzville law firm for a no-obligation case evaluation. We’ll listen to your story, answer your questions, and explain your legal options. Consultations are available in our office, by phone, or at a location convenient for you.

Step 2: Investigation and Case Development

If you choose our law firm, we immediately begin investigating your case. This includes gathering medical records, interviewing witnesses, consulting with experts, and building a comprehensive strategy for maximum compensation.

Step 3: Negotiation or Litigation

We aggressively negotiate with insurance companies, using our insider knowledge of their tactics. If they refuse to offer fair compensation, our law firm is fully prepared to file a lawsuit and take your case to trial.

Step 4: Resolution and Recovery

Whether through settlement or verdict, our goal is securing the compensation you need to move forward. We ensure you understand every document before signing and remain available to answer questions even after your case concludes.

Don’t Wait—Protect Your Rights Today

If you’ve been injured at work or in an accident in Wentzville, time matters. Evidence disappears, witnesses’ memories fade, and deadlines approach. The sooner you contact our law firm, the better we can protect your rights and pursue the compensation you deserve.


When you need a Wentzville law firm that combines medical expertise, insider insurance knowledge, and decades of proven results, contact Hennessey Law Firm. We’re here to fight for your rights and help you secure the compensation you deserve.


35 years of legal expertise right at your service


35 years of legal expertise right at your service