What Happens During a Deposition: Oath, Questions, Transcript

During a deposition, you sit in a conference room, take an oath to tell the truth, and answer an opposing attorney’s questions on the record while a court reporter transcribes every word. What happens during a deposition is, in practical terms, a few hours of methodical question-and-answer: your own lawyer sits beside you and makes objections, documents get marked as exhibits and handed to you, and the whole session later becomes a sworn transcript you can review and correct. Because you are under oath, the testimony carries the same legal weight as what you would say in a courtroom, and lying can bring perjury charges punishable by up to five years in federal prison.¹

Who Is in the Room

Depositions happen in conference rooms, not courtrooms. The person being questioned is called the deponent, and that may be a party to the lawsuit, an eyewitness, or an expert hired for specialized knowledge. When a corporation or other organization is the deponent, the organization picks someone to testify on its behalf about topics it reasonably has knowledge of.²

Attorneys for every party in the case attend. The attorney who scheduled the deposition does most of the questioning. The deponent’s own attorney sits in to protect their client’s interests, raise objections, and step in if questioning becomes improper. A court reporter records everything and later produces the official transcript. Depending on the case, a videographer may also record the session, and a language interpreter may be present if the deponent isn’t fluent in English.

Depositions don’t always happen in person. The parties can agree, or a court can order, that a deposition be taken by telephone or video conference, and the deposition is legally considered to take place wherever the deponent is sitting when they answer the questions.² Remote depositions have become far more common since 2020, with the oath still administered by someone authorized to do so.

The Oath and Ground Rules

The court reporter begins by placing the deponent under oath, the same oath a witness takes in court. That is what gives the testimony its legal force. Once the oath is administered, the examining attorney typically covers a few ground rules: answer verbally, wait for the full question before responding, and say so if you don’t understand something. These aren’t just courtesies. They exist because the court reporter can’t transcribe a nod, and because overlapping voices produce a muddled record.

The Questioning Itself

Questioning then begins. The examining attorney works through a series of questions about the facts, events, and circumstances at the heart of the lawsuit. This is not the rapid-fire cross-examination seen on television. Most deposition questioning is methodical and detail-oriented, aimed at pinning down exactly what the witness knows and how they know it.

Expect long stretches on narrow topics. An attorney may spend thirty minutes building a timeline of a single meeting, or walking you line by line through an email you sent two years ago. The point is to lock down your account while memories can still be tested, and to find any gaps or contradictions that can be revisited at trial.

Objections and When You Still Have to Answer

The deponent’s attorney can object at any point, and those objections go on the record. Here is what catches most people off guard: the deponent still has to answer the question even after an objection. The objection is preserved in the transcript for a judge to rule on later, but the questioning proceeds.²

The only time an attorney can instruct a deponent not to answer is when the question invades a legal privilege, such as attorney-client communications, when a court order already limits the scope of questioning, or when the attorney needs to suspend the deposition to file a motion to stop it.² If you hear your attorney object but not instruct you to refuse the question, that is your cue to go ahead and answer.

Documents and Exhibits

Attorneys frequently show the deponent documents during questioning. A notice to depose a party can include a request to produce specific documents at the deposition, and non-parties can be required to bring materials through a subpoena. Each document gets marked with a number or letter by the court reporter and becomes a formal exhibit. The examining attorney then asks the deponent questions about it: what it is, whether they have seen it before, what it means in context. At the close of the deposition, the attorneys put any agreements about custody of the exhibits on the record.²

How Long It Lasts

Federal rules cap a deposition at one day of seven hours. The court can extend that time if needed to fairly examine the witness, or if someone’s conduct has delayed the process.² The parties can also agree among themselves to a longer or shorter session. In practice, most depositions of lay witnesses wrap up well within the seven-hour window. Expert witness depositions and depositions of key parties tend to run longer. Breaks for lunch, bathroom, and brief rests are standard and usually not counted strictly against the clock by agreement.

If Questioning Crosses a Line

If questioning becomes abusive, harassing, or conducted in bad faith, the deponent or any party can demand the deposition be suspended and file a motion asking the court to intervene.² The court can issue a protective order limiting the scope of questioning, restricting who may be present, forbidding certain lines of inquiry, or terminating the deposition entirely.³ Before filing that motion, the party seeking protection has to certify that they tried in good faith to resolve the dispute without court involvement.

If the court terminates a deposition, it can only resume by court order. The court can also shift the costs of the motion to whichever side was in the wrong, so an attorney who pushes too hard may end up paying the other side’s expenses.

How to Handle Yourself While Being Questioned

The single most important rule is to tell the truth. Deposition testimony is given under oath, and perjury is a federal felony. Beyond that, the deponent’s job is simpler than most people expect: listen to the question, answer it, and stop talking. Volunteering extra information is where depositions go sideways for most witnesses.

Wait for the full question. Jumping in early leads to misunderstandings and muddled transcripts. Let the attorney finish, pause, then respond.
Answer only what was asked. If the question is “Were you at the meeting on June 5th?” the answer is yes or no, not a summary of everything that happened at the meeting.
Say you don’t know when you don’t know. Guessing or speculating is worse than admitting a gap in your memory. “I don’t recall” is a perfectly acceptable answer when it’s honest.
Ask for clarification. If a question is confusing or uses unfamiliar terminology, you have every right to say so and ask the attorney to rephrase.
Speak your answers out loud. Head nods and shrugs don’t show up in a written transcript. Everything needs to be verbal.

Stay calm and resist the urge to argue with the examining attorney. Experienced litigators know how to ask questions that feel confrontational, and getting drawn into a debate almost always hurts the deponent more than it helps.

After Questioning Ends: The Transcript and Errata

After questioning wraps up, the court reporter prepares the official written transcript. If the deponent or any party requests it before the deposition ends, the deponent gets a chance to review that transcript once it is ready.² If you want this right, make sure your attorney asks for it on the record before you leave.

Once notified the transcript is available, the deponent has 30 days to submit a signed statement listing any changes and the reasons for each one. These corrections go on a separate document commonly called an errata sheet. The federal rules allow changes “in form or substance,” which means a deponent can do more than fix typos; they can clarify or even substantively change an answer.² The original answer stays in the record, though, and the opposing attorney will almost certainly ask about major changes in later proceedings.

Substantive errata changes are one of the more contested areas in deposition practice. If a witness dramatically rewrites an answer, the opposing party can reopen the deposition at its own expense to question the witness about why the change was made. Communications between the deponent and their attorney about the changes are fair game during that follow-up questioning.

What the Testimony Is Used for Later

A deposition transcript doesn’t just sit in a file. Under federal rules, deposition testimony can be used against a party at a hearing or trial as long as that party was present at the deposition or had reasonable notice of it.⁴

The most common use at trial is impeachment. If a witness says something on the stand that contradicts what they said during their deposition, the opposing attorney can read the deposition testimony back to them and force them to explain the discrepancy. Any party can use a deposition to contradict or impeach a witness’s trial testimony.⁴ This is why experienced attorneys hammer home the “tell the truth” rule. Inconsistencies between deposition and trial testimony can destroy a witness’s credibility.

If a witness can’t appear at trial, the deposition can serve as their testimony. Federal rules allow this when the witness has died, is more than 100 miles from the courthouse, can’t attend due to age or illness, or can’t be reached by subpoena.⁴ In those situations, the transcript or video recording essentially stands in for live testimony.

Depositions of a party, or of that party’s officers, directors, or designated corporate representatives, get even broader use. The opposing side can introduce that testimony for any purpose, not just impeachment.⁴ If you are being deposed as a party, everything you say can be read to a jury as substantive evidence of what happened, not merely used to challenge your story. Deposition transcripts also get attached to pretrial motions, particularly motions for summary judgment, where a party argues the case can be decided without a trial because the sworn testimony already settles the key facts.

1
Office of the Law Revision Counsel. 18 USC 1621 – Perjury Generally
2
Legal Information Institute. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination
3
Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery
4
Legal Information Institute. Federal Rules of Civil Procedure Rule 32 – Using Depositions in Court Proceedings