New York City (212) 742-0001
Long Island (631) 920-5394
Blog
Logo M

How Deposition Testimony Can Affect the Outcome of an Injury Case

How Deposition Testimony Can Affect the Outcome of an Injury Case

Deposition testimony can be used at trial not only to impeach a witness but also as substantive evidence to support a case, provided certain conditions are met under California and federal law.

Monarch Law Group

Apr 29, 2026

Our Practice Areas
Home > Blog > How Deposition Testimony Can Affect the Outcome of an Injury Case

If you have suffered an injury and are involved in a personal injury lawsuit, you may have heard about depositions. But what exactly is a deposition, and why does it matter so much?

During the discovery phase of a case, both sides gather evidence to understand what happened and who may be responsible. One of the most important tools in this phase is the deposition. Deposition refers to sworn testimony given outside the courtroom by the parties involved in a case.

What is said during this process can significantly influence how the case unfolds.

Why Deposition Testimony Matters in Personal Injury Cases

Depositions are highly significant in personal injury cases because they help establish the facts behind an accident. Attorneys rely on sworn statements from the plaintiff, the defendant, and, in some cases, expert witnesses to understand better how the accident occurred.

One of the main purposes of deposition is to clarify liability. The testimony given can help determine who may be legally responsible for the injury. For instance, a witness might describe what they saw at the scene, while a defendant may explain what they were doing before the accident happened.

Even when the person being deposed does not have all the answers, their testimony can direct attorneys toward additional evidence or other witnesses. Depositions also help document damages suffered by the injured party. During questioning, the plaintiff may state the financial losses and the injury’s impact, as this testimony can support compensation claims later.

Preparing a Witness for a Deposition

Preparation for a deposition typically involves multiple sessions with your attorney to review facts, likely questions, and relevant documents. Witnesses should practice answering tough questions out loud to help control their tone and avoid unnecessary detail during depositions. Remember that during a deposition, you are under oath, and lying can result in perjury charges or damage to your case’s credibility. 

During witness preparation for depositions, it is important to inform witnesses that they should not volunteer extra information and should only answer the questions asked.

How Deposition Testimony Shapes a Civil Procedure’s Outcome

Deposition testimony can be used at trial not only to impeach a witness but also as substantive evidence to support a case, provided certain conditions are met under California and federal law. Depositions serve as an important tool for preserving a witness’s testimony, allowing it to be used in the courtroom if the witness is unavailable at the time of trial, thus ensuring that their statements can still be presented as evidence. The following are three key ways deposition testimony can shape how your injury case unfolds:

Depositions Can Be Used as Substantive Evidence

While many injury cases are resolved outside of a courtroom, a deposition still has significant legal consequences. The testimony may be used in open court if a witness cannot appear in trial or if their statements need to be referenced.

Evaluating Witness Credibility

Depositions are one of the ways attorneys use to evaluate witness credibility. Consistency, clarity, and honesty can strengthen a witness’s credibility, while contradictory or vague responses may weaken it. This helps an attorney assess how a witness will perform on the stand if the case eventually goes to trial. 

At the same time, the opposing counsel may also look for inconsistencies in testimony to weaken the other side’s case.

Influence on Settlement Negotiations

Another way depositions affect a case’s outcome is by influencing settlement discussions. If deposition testimony strongly supports one side’s claims, the opposing party may be more willing to negotiate a settlement rather than risk losing at trial. On the other hand, if the witness testimony reveals problems in a case, a party may reconsider its legal strategy or even consider settling the case sooner.

Key Differences in a Deposition Versus Trial Testimony

In New York, a deposition is a critical part of the discovery process where you provide sworn testimony outside of the courtroom, as opposed to trial testimony, which takes place before a judge and sometimes a jury in a courtroom. Depositions in New York typically occur in an attorney’s conference room or virtually via platforms like MS Teams or Zoom. Under New York Uniform Rule 221, you must answer all questions in a deposition unless your attorney directs otherwise to preserve a privilege or if a question is plainly improper.

During depositions, attorneys can ask broad questions and explore responses in detail, whereas trial testimony is more structured and limited, with a judge present to rule on objections in real time. 

Depositions are part of the discovery process and can be used to impeach a witness if their trial testimony differs from what they said during the deposition.

How an Experienced Attorney Can Help You Prepare for a Deposition

Depositions can feel intimidating, especially if you have never been involved in a lawsuit. However, an experienced attorney can guide you through the process by explaining what to expect, reviewing important details of the case, and even helping you prepare for questioning, including providing examples of questions you can expect and general guidelines for how to answer. They can also help you understand your rights and options during the deposition.

Contact the Monarch Law Group for Help

If you have been injured because of someone else’s negligence, contact our experienced New York City personal injury lawyers at the Monarch Law Group immediately to help you prepare for your deposition and build a strong case. Learn your legal rights as well as the most effective ways to answer the questions opposing counsel may present to you, so you aren’t left in the dark about what to do next.

Icon Crown

Related Blog Posts

Icon Crown

Directions

New York City

30 Wall Street, 8th Floor
New York, NY 10005

Get Directions
Long Island

445 Broad Hollow Rd, Suite 25
Melville, NY 11747

Get Directions