Gartner Law Firm

Trusted Legal Help Across Missouri

Clear legal guidance for Missouri families and individuals facing injury, criminal, family, and workplace legal issues.

About us

A Small Firm with Deep Experience

When legal problems feel personal, the law firm you choose should feel personal too. Gartner Law Firm helps people across Missouri move forward with clear advice, strong representation, and the kind of attention larger firms often miss.

Practice Areas

Legal Help for the Problems People Cannot Ignore

Whether you are hurt, charged, going through a family legal issue, or dealing with a work injury, we help you understand your options and what comes next.

Personal Injury

Help after serious accidents caused by someone else’s negligence.

Workers’ Compensation

Guidance for injured workers seeking benefits and support.

Criminal Defense

Defense for charges that can affect your freedom, job, and future.

Probate Matters

Support for wills, estate administration, asset distribution, and navigating the probate process.

Car Accidents

Representation for crash victims facing medical bills, lost income, and recovery.

DUI & Drug Charges

Strategic defense for charges that can follow you for years.

our legal process

Simplifying Complexities with Proven Guidance

Initial Consultation

We start by listening to your situation and your concerns.

Case Assessment

Our team looks at the details and helps identify the strongest next steps.

Your Legal Options

You get clear guidance on what your case may involve and how to move forward.

Ongoing Representation

Whether your case leads to negotiation, settlement, or court, we stay involved and keep you informed.

Testimonials

For over 40 years,we’ve been helping clients overcome their legal challenges.

      
   Gartner Law Firm
   12 Google reviews 
  Write a review 
  
 
 
   
 
 
       Posted on Google  
   
   najda moalla 
 
 
 
 Trustindex verifies that the original source of the review is Google. My dad hired Mark as his attorney, and we couldn’t be more grateful for the incredible work he did on the case. Mark was thorough, knowledgeable, and truly dedicated from start to finish. He took the time to explain everything clearly and made sure we always felt supported and informed. Thanks to his expertise and professionalism, the entire process went smoothly. We highly recommend Mark to anyone in need of a trustworthy and skilled attorney.
  
 
      Posted on Google  
   
   Lori Leidner 
 
 
 
 Trustindex verifies that the original source of the review is Google. Mark Gaertner was just  wonderful to work with. He took care of everything for me and was very prompt getting back to me when I had questions by an email or text. I would definitely recommend Mark.
  
 
      Posted on Google  
   
   Alexander Langland 
 
 
 
 Trustindex verifies that the original source of the review is Google. Richard knows everyone and everything there is to know regarding the law and our legal system.
  
 
      Posted on Google  
   
   christopher mast 
 
 
 
 Trustindex verifies that the original source of the review is Google. I’ve retained the Gartner Law Firm on two occasions; first for an auto injury involving my wife and second for a DWI involving my stepson. Richard Gartner did a fine job on both occasions with good resolutions achieved.
  
 
      Posted on Google  
   
   Blake Baldwin 
 
 
 
 Trustindex verifies that the original source of the review is Google. I could not be happier with the gartner law firm.    I was referred to them by a friend also in the legal field.      Right away when I talked to matt gartner about my particular work comp case he was very easy to talk to and did not give me that "salesman vibe" I would know as I am a salesman by profession.     Matt did an excellent job explaining all the ins and outs of my particular case and looked at everything in a very objective fashion.

Now I will say you must be patient with this process! You will not get results overnight.   You must be patient to get the best result.     That being said I'd be more than happy to suggest anyone with personal injury or work comp matters to consider the gartner law firm.     I now know they are hands down my go to guys for anything work comp or personal injury related.   Thanks again gartner law firm
  
 
      Posted on Google  
   
   Mike Walsh 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great people hard to get hold of but they did their job

"Thanks to Gartner Law, I received fair compensation for my personal injury case quickly and efficiently"

40+ Years of Experience

Serving Missouri Communities

MATTHEW GARTNER

Gartner Law Attorney

Legal Resource Center

Helpful Answers for Unclear Situations

Explore practical articles designed to help Missouri families and individuals better understand legal issues involving injuries, criminal charges, family matters, and workplace claims.

July 21, 2026

How Is Child Custody Decided in Missouri?

Learn how Missouri courts decide child custody, what factors judges consider, and how parenting plans and custody modifications work.

July 21, 2026

What Happens After a DUI Arrest?

Learn what to do after a Missouri car accident that was not your fault and how to protect your health, evidence, and insurance claim.

July 21, 2026

What to Do After a Car Accident That Wasn’t Your Fault

Learn what to do after a Missouri car accident that was not your fault and how to protect your health, evidence, and insurance claim.

July 21, 2026

How Long Do You Have to File a Personal Injury Claim in Missouri?

Learn Missouri’s personal injury filing deadlines, important exceptions, and why acting quickly can help protect your right to compensation.

Get Clear Answers About Your Next Step

You do not have to figure everything out before you call. If you are dealing with an injury, a criminal charge, a family law issue, or a workplace injury, we are here to listen and help you move forward.

Common Questions About Your Rights

What types of cases does Gartner Law Firm handle?

Personal injury, workers’ compensation, criminal defense, and family law matters.

How do I know if I have a case?

The best place to start is with a consultation. We can review your situation and help you understand your options.

What should I bring to my consultation?

Any documents related to your case, such as reports, medical records, court paperwork, or insurance communications.

How soon should I contact a lawyer?

As soon as possible. Early action can help protect your rights and avoid mistakes.

Do I have to know exactly what kind of case I have before I call?

No. We can help you understand where your issue fits and what your next step should be.

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Personal Injury

Criminal Defense

Family Law

Workers’ Compensation

Trusted Legal Help Across Missouri

A Small Firm with Deep Experience