What Are Interrogatories in Personal Injury Cases?

If you are asking what are interrogatories in personal injury cases, you are not alone — and the answer in New York is more limited than most people expect. Interrogatories are written questions one party in a lawsuit sends to another. The party who gets them must answer in writing, under oath. They are one tool in the discovery process. In New York personal injury cases based on negligence, though, lawyers rarely use them. There is a state law called CPLR 3130. Under it, a party usually cannot send interrogatories and also take a deposition of that same party. To do both, you need the judge's permission. Most New York personal injury attorneys use bills of particulars and depositions instead.

That last point surprises a lot of people. Most online explanations treat interrogatories as a routine, central part of every injury case. In New York, that is not how negligence claims usually work. It helps to understand why, whether you have already received interrogatories, expect to, or are just trying to make sense of your case. The Orlow Firm has guided injured New Yorkers through discovery for more than 40 years. Below, we explain exactly where interrogatories fit.

The Discovery Process in New York Personal Injury Cases

Discovery is the formal exchange of information between the two sides. It happens after a lawsuit is filed and before trial. The goal is simple. Each side gets to learn the facts, find the evidence, and prepare its case, so nobody is ambushed at trial. New York's discovery rules live in Article 31 of the Civil Practice Law and Rules, known as the CPLR.

In a typical New York personal injury lawsuit, attorneys use a handful of core discovery tools:

• Bill of particulars: a detailed written breakdown of the claims in the complaint. It is almost always demanded in personal injury cases.
• Depositions: live, sworn, out-of-court testimony, where attorneys ask questions and follow up in real time. In New York this is called an examination before trial, or EBT.
• Demands for production: requests for documents, records, photos, and other physical evidence.
• Physical and medical examinations: including the defense medical exam of the injured plaintiff.

Interrogatories are part of this system. But in negligence-based personal injury cases, they play a narrow, rarely used role. The reasons come straight from the statute.

When Are Interrogatories Used in Personal Injury Cases?

As a general rule, any party to a New York lawsuit may send interrogatories to any other party once the case has begun. But CPLR 3130 includes an important exception that applies to most injury claims.

Take a personal injury, property damage, or wrongful death case based only on negligence. In that kind of case, a party cannot both send interrogatories to another party and take that same party's deposition without leave of court. Leave of court just means the judge's permission. (CPLR § 3130) The statute also bars a party from sending both interrogatories and a bill of particulars to the same party, outside of matrimonial cases.

The practical effect is significant. Car accidents, slip and falls, and most construction accident claims are built on negligence. Attorneys cannot freely pair interrogatories with a deposition or a bill of particulars. So they almost always pick the bill of particulars and the deposition, because those tools give them the most useful information. As a result, interrogatories are rarely sent in standard negligence cases.

Interrogatories are more likely to show up when:

• The case rests on non-negligence theories, such as breach of contract, intentional torts, or certain products liability claims.
• The case is in federal court, where the CPLR does not apply. There, Rule 33 of the Federal Rules of Civil Procedure governs interrogatories instead.
• The parties agree to use them, or the court grants leave to use them alongside a deposition.
• A personal injury claim is bundled with a commercial or other dispute that is not based only on negligence.

So if you have a straightforward New York negligence case and someone mentions interrogatories, ask your attorney whether they actually apply to your situation.

What Do Interrogatories Ask About in a Personal Injury Case?

When interrogatories are used, their scope is broad. Under CPLR 3131, they may seek the same information you could get through any other discovery tool. That means anything that is relevant to the case and not privileged. (CPLR § 3131)

In a personal injury case, interrogatories typically ask about:

• How the accident happened: the where, when, and how
• The injuries claimed and the medical treatment received
• Prior injuries or medical history that may relate to the current claim
• Witnesses to the accident and their contact information
• Insurance coverage that may apply
• Money losses, such as lost wages and out-of-pocket expenses
• Any prior lawsuits or claims by the answering party

The answers are sworn. That means they become part of the official record and can be used later in the case. This is exactly why they have to be handled with care.

New York Rules Governing Interrogatories

If you do receive interrogatories, a few key rules govern how they work in New York state court.

• The 20-day deadline. A party who is served with interrogatories must serve answers or objections within 20 days. (CPLR § 3133) You can only get an extension by agreement between the parties or by court order.
• The 25-question limit. In Supreme Court and County Court, interrogatories are generally capped at 25 questions, including subparts. To go past that, you need a court order or the other side's agreement. (22 NYCRR § 202.20)
• Answers under oath. Responses must be in writing and signed under oath by the party, not just the attorney. Each question must be answered separately and fully, with the question set out before each answer.
• Objections must be specific. A party who objects must give a clear reason for each objection. A blanket refusal will not hold up.
• Consequences of ignoring them. If a party fails to respond, the other side can ask the court to compel answers. The court may also impose penalties for not complying.

Bill of Particulars vs. Interrogatories: The Tool New York Injury Lawyers Actually Use

Many readers reach this question after hearing the term bill of particulars and wondering how it differs from interrogatories. The two are easy to mix up, but they do different jobs.

A bill of particulars spells out the claims already made in the complaint. It lays out the specifics. That includes exactly how the defendant was negligent, the injuries claimed, and the damages sought. It is not really a tool for hunting up new evidence. Instead, it pins down and limits what the plaintiff will have to prove at trial. In New York personal injury practice, the defense almost always demands a bill of particulars, and providing one is routine.

Interrogatories work differently. They are a discovery tool aimed at uncovering facts. Their possible scope is broader. But as explained above, CPLR 3130 heavily restricts their use in negligence cases. The statute usually means you get one or the other, not both. So attorneys default to the bill of particulars.

Depositions round out the picture. They are governed by CPLR 3107 through 3116. A deposition is live sworn testimony, where an attorney can ask a question, hear the answer, and follow up right away. That real-time give-and-take makes depositions far more powerful than written questions answered weeks later with an attorney's help. For New York injury lawyers, the bill of particulars plus the deposition is the standard, preferred combination.

The video below offers a client's perspective on how the litigation and trial process unfolds:

What to Do If You Receive Interrogatories

If interrogatories do land in your case, here is how to handle them. Treat this as general guidance, not specific legal advice for your situation.

Start by noting the deadline. You generally have 20 days to respond under CPLR 3133, so do not set the paperwork aside. Next, do not answer on your own. These are sworn statements that become part of the court record. An offhand or incomplete answer can come back to hurt your case later. Your attorney will help you write accurate responses. Your attorney can also object to questions that are improper, too broad, or that seek privileged information.

Before you answer, gather the materials you need. That means medical records, the accident report, photos, and any documents that relate to the questions. Answer fully and truthfully. Vague or incomplete answers can be challenged and may trigger a motion to compel. Finally, keep copies of everything you submit, so you have a clear record of what you said under oath.

Frequently Asked Questions

What is the difference between interrogatories and a deposition?

Interrogatories are written questions answered in writing under oath, typically with time to prepare and attorney involvement. A deposition is live, in-person sworn testimony where attorneys ask follow-up questions immediately. New York injury lawyers generally prefer depositions because real-time questioning reveals more. CPLR 3130 also bars using both on the same party in a negligence case without court permission.

How long do I have to respond to interrogatories in New York?

You generally have 20 days from service to serve your written answers or objections, under CPLR 3133(a). You can only extend that deadline by agreement between the parties or by court order. Act quickly and involve your attorney right away — missing this deadline can trigger a motion to compel.

Can interrogatories be used in every personal injury case in New York?

No. In cases based only on negligence, CPLR 3130 bars sending interrogatories together with a deposition of the same party without court permission. That covers most car accident, slip and fall, and construction cases. Interrogatories show up more often in non-negligence claims, federal cases, or where the court or the parties allow it.

Are interrogatory answers public record?

Interrogatory answers are exchanged between the parties. They are not automatically filed as public records just by being served. They can become part of the public court file if they are filed with the court or used in motions or at trial. So treat them as statements that may be seen beyond the parties.

Sources & Official Resources

New York Laws Cited

1. CPLR § 3130 — Interrogatories; when permitted
2. CPLR § 3131 — Scope of interrogatories
3. CPLR § 3133 — Service and filing of answers to interrogatories
4. CPLR § 3107 — Notice of examination; persons to be examined
5. CPLR § 3116 — Signing deposition; physical preparation; copies

Court Rules Cited 6. 22 NYCRR Part 202 — Uniform Civil Rules for the Supreme Court and the County Court (§ 202.20 Interrogatories)

Contact The Orlow Firm

Were you injured in New York City and have questions about discovery? That includes interrogatories, depositions, a bill of particulars, or any other part of your case. Understanding your options is an important first step. The Orlow Firm has helped injured New Yorkers throughout Queens and the surrounding boroughs for over 40 years.

Call (646) 647-3398 for a free consultation. We work on contingency — you pay nothing unless we win.

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This article provides general information about New York state court procedure and is not legal advice. Federal court rules differ. Every case is different — contact an attorney to discuss your specific situation.