Witnesses in Personal Injury Trials | Staver Accident Injury Lawyers, P.C.
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Key Witnesses in a Personal Injury Case: Who Should Testify?

Written by Jared Staver

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Jared Staver is a Personal Injury Lawyer based in Chicago, Illinois and has been practicing law for over 25 years.

Jared Staver

CATEGORY: Personal Injury


When your personal injury claim goes to trial, evidence will be admitted to the court through witnesses. Whether the evidence includes photos of the scene of the accident or information regarding your physical and psychological injuries, it will be introduced when an individual is on the stand to verify the evidence and answer questions about it. With a wide range of evidence to submit, your attorney will need numerous witnesses to discuss the accident, your injuries, and your monetary damages. Common witnesses in personal injury trials include medical experts, engineers, and people who saw the accident happen.

To learn more about bringing a personal injury claim and the types of witnesses that are necessary, contact a Chicago personal injury attorney of Staver Accident Injury Lawyers, P.C. at (312) 236-2900.

The Difference Between Lay and Expert Witnesses

A personal injury expert witness is an individual whose education, training, work, and reputation within a specific field make that individual uniquely qualified to provide an opinion on an issue pertaining to that field during a lawsuit. An expert may be used during a personal injury case to talk about a specific issue, such as a medical expert discussing a type of injury you suffered, or to a more generalized issue, such as an engineer discussing the design of a vehicle. An expert witness must go over his or her qualifications in court before being allowed to testify about the issue. Usually, an expert witness is not personally involved with the case. Instead, he or she is there to provide an objective opinion based on the facts. Additionally, an expert witness is usually paid for his or her time spent preparing for and attending trial.

A lay witness is an individual who offers testimony based on what he or she knows about the accident. A lay witness does not need any specific qualifications to testify. However, in order for his or her testimony to be allowed, it must be based on his or her own perception, such as his or her sight or hearing, and it must be relevant to the personal injury case. Essentially, anyone who testifies during a trial who is not an expert is a lay witness.

Common Expert Witnesses in Personal Injury Trials

Personal injury cases often require certain types of expert witnesses, including:

  • Medical experts
  • Mental health experts
  • Accident reconstruction experts
  • Engineers
  • Maintenance specialists
  • Physicists
  • Economic experts
  • Regulatory experts
  • Vocational specialists
  • Data experts

How Are Expert Witnesses Selected in Personal Injury Cases?

Expert witnesses can make or break a legal case. Their testimony is professional, and as specialists in their field, they often can significantly influence a jury’s decision in a case. For this reason, it is so important to choose an appropriate expert witness. The following are some important guidelines a lawyer typically adheres to when choosing an expert witness for a personal injury case:

  • Make sure they have impeccable credentials. The experts that a personal injury attorney chooses should not only have considerable expertise in their field, but also a history of experience in the particular sub-field of your case. They should have degrees from reputable schools and have memberships in relevant professional or academic organizations. It is even better if they have publications in trusted journals related to what they will testify about.
  • Ensure that there is no conflict of interest. Opposing counsel will be looking for any reason to discredit expert witnesses, so it is important to make sure they have no obvious biases related to the case (for example, a relation to the client or a large monetary investment in the case). They must have objectivity, credibility, and integrity.
  • Look for any potential skeletons in the witness’s closet. If there are any potential scandals in the witness’s past, they could be brought up at trial and damage testimony. It is important to conduct a thorough background check to see if there may be litigation against the witness or any disciplinary actions that would tarnish the witness’s reputation. It is also important to make sure the witness has not made public statements that will be at odds with the trial testimony.
  • Interview potential expert witnesses face-to-face to learn about their presence on the stand. An expert witness does not only need to be qualified; they must also be likeable and personable. If the witness is not a good public speaker, they may lose the jury’s attention or even be disliked. It is important to find out what kind of presence the witness will have on the stand. If they have testified in court previously, it can be helpful to talk to lawyers who have worked with the witness in the past or even watch a recording.
  • Test that the witness can think on his or her feet. Witnesses may be asked unexpected questions by opposing counsel and it is important that they can respond with composure and adapt to new situations calmly.
  • Assure that the witness believes in the case and is willing to defend his or her position. An expert witness needs to convey authority and certainty without being defensive. For this reason, it is imperative that the expert witness chosen really believes what they attest and can back it up with evidence.

Selecting an appropriate expert witness can go a long way in supporting a medical malpractice, premises liability, or auto accident case. Often, an attorney has years of experience choosing appropriate witnesses, so if you have not already gotten an opinion on your case from a qualified attorney, you should consider doing so. By working one-on-one with an experienced lawyer, you are much more likely to build a convincing case.

Common Lay Witnesses in Personal Injury Trials

When you testify in your own personal injury case, you are a lay witness. Even if you are an expert in your field, you are not testifying based on your education and professional experience. You are testifying based on your own experiences and perceptions. Other common lay witnesses used in personal injury trials include:

  • Your spouse or significant other
  • Your family members, friends, or neighbors
  • Witnesses to the accident
  • Your physician or medical provider
  • Your care professional
  • Your employer or supervisor
  • Your coworkers
  • The defendant
  • Employees of the defendant

Preparing for Trial

Your attorney will thoroughly identify necessary witnesses and prepare all of them for court. This will include taking depositions, going over answers and questions, and practicing how to give clear, understandable answers. By the time each witness goes to the stand, he or she will know your attorney’s questions and the order in which they will be asked, and your lawyer will know all of the witnesses’ answers. Your attorney will also have gone over potential questions from the defendant’s attorneys, preparing your expert and lay witnesses for cross-examination.

What to Expect at Court

Your attorney will call witnesses to the stand one at a time and ask them the predetermined questions. This is known as a direct examination and witnesses are expected to answer promptly and clearly, speaking loud enough for the entire courtroom to hear. Once your attorney finishes his or her questions for a witness, the opposing side’s attorney will then ask that witness questions. This is the cross-examination and can be stressful for the witness. However, he or she will be prepared for these and will have practiced giving short, brief answers. If your attorney has any follow up questions after the cross-examination, the judge may allow him or her to ask a few questions during what is known as a re-direct.

Contact a Chicago Personal Injury Attorney for Help

If you have been hurt in an accident, an experienced personal injury lawyer can help you bring a personal injury claim and gain compensation. An attorney can guide you through an insurance claim, and if necessary, represent you during a personal injury lawsuit. If your case needs to go to trial, an attorney is essential in gathering evidence, finding experts, preparing witnesses, and ensuring a cohesive argument is made in court.

Contact Staver Accident Injury Lawyers, P.C. at (312) 236-2900 to schedule an initial consultation.

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(312) 236-2900
(312) 236-2900
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