A deposition is sworn testimony taken outside the courtroom before trial. It is one of the main tools of discovery in civil litigation, and it lets each side learn what a witness knows, lock in that testimony, and test the strength of the other side's case. Depositions can be used later to impeach a witness or, in some situations, to present testimony at trial.
Where Depositions Fit in a Lawsuit
Civil litigation moves through several stages. Pleadings define the claims and defenses. Discovery is the period when the parties exchange information. Trial is where the case is decided if it does not settle. Depositions belong to the discovery stage. They are one of several discovery devices, alongside written interrogatories, requests for production of documents, and requests for admission.
Discovery is broad by design. Under Rule 26 of the Federal Rules of Civil Procedure, parties may obtain information that is relevant to any claim or defense and proportional to the needs of the case. Depositions are a central part of that exchange because they allow live questioning and follow-up.
Who Can Be Deposed
Any party can be deposed, and so can nonparties who have relevant information. A party is compelled to appear through a notice of deposition. A nonparty is usually compelled through a subpoena under Rule 45. A subpoena may also require the witness to bring documents, a practice sometimes called a subpoena duces tecum.
An organization, such as a corporation or government agency, is deposed through a designated representative. Under Rule 30(b)(6), the organization must identify one or more people who can testify about the matters described in the notice. The organization must prepare those witnesses to speak on its behalf.
How a Deposition Works
- The party seeking the deposition gives reasonable written notice stating the time, place, and name of the witness.
- The deposition usually takes place in a conference room or law office, not a courthouse.
- A court reporter or other authorized officer administers an oath and records the testimony.
- The examining attorney asks questions, and the witness answers under oath.
- Opposing counsel may object, instruct the witness, or ask questions on cross-examination.
- The reporter produces a transcript, and the witness may review and correct it in some circumstances.
Depositions are often recorded by stenographic means, and parties may also arrange audio, video, or real-time transcription. Video depositions are common when a witness may be unavailable at trial.
Depositions vs. Other Discovery Tools
| Tool | What it does | Key difference |
|---|---|---|
| Deposition | Live sworn testimony | Follow-up questions and witness demeanor |
| Interrogatories | Written questions to a party | Answered in writing, often after research |
| Requests for production | Documents and things | Produces records, not testimony |
| Requests for admission | Asks a party to admit facts | Narrows issues for trial |
Objections and Privileges
During a deposition, an attorney may object to a question. Most objections are preserved for later review, and the witness generally still answers unless the question calls for privileged information. Common grounds include relevance, form of the question, and attorney-client privilege. A witness may also invoke the Fifth Amendment privilege against self-incrimination when an answer could expose the witness to criminal liability.
An attorney may instruct a witness not to answer only in limited circumstances, such as to preserve a privilege, to enforce a court-ordered limitation, or to present a motion to the court. Instructing a witness not to answer for other reasons can lead to sanctions.
Limits on Depositions
The federal rules place limits on how much discovery a party can conduct. Under Rule 30(a)(2), a party generally needs leave of court to take more than ten depositions. Under Rule 30(d)(1), a deposition is limited to one day of seven hours unless the parties agree or the court orders otherwise. Courts can also issue a protective order under Rule 26(c) to prevent annoyance, embarrassment, oppression, or undue burden.
If a witness fails to appear or refuses to answer, the requesting party may ask the court to compel the testimony. Under Rule 37, a court may impose sanctions, including ordering the deposition, excluding evidence, or treating the failure as contempt.
How Depositions Are Used at Trial
Rule 32 governs the use of depositions at trial. A deposition can be used to impeach a witness whose trial testimony differs from the earlier account. It can also be used as substantive evidence when the witness is unavailable for reasons such as death, illness, or distance, or when exceptional circumstances make it fair to admit the testimony. Because a deposition transcript is sworn, inconsistencies carry weight.
Deposition vs. Trial Testimony
Depositions and trial testimony differ in important ways. A deposition is taken without a judge present, and the questioning is often broader than at trial. Hearsay rules apply more loosely in depositions, though objections can be preserved. At trial, a judge controls the courtroom, the jury may be present, and the rules of evidence apply directly. A deposition is primarily a discovery tool; trial testimony is the evidence the factfinder uses to decide the case.
Preparing for a Deposition
Preparation matters. A witness should review key documents, understand the claims, and be ready to answer truthfully and carefully. Attorneys commonly advise witnesses to listen to the full question, pause before answering, ask for clarification when needed, and avoid guessing. The transcript is a record that can be used later, so accuracy is more important than speed.
This guide is general information about civil procedure and is not legal advice. Deposition rules vary by jurisdiction and by case, and anyone involved in a deposition should consult a licensed attorney.