Seven Key Differences When Litigating Personal Injury Cases in New Jersey vs. New York

Dawn Pinnisi

November 10, 2026

By: Dawn M. Pinnisi

Trial attorneys barred in both New Jersey and New York, whose practices take them to state courts in both, have to worry about more than juggling multiple CLE requirements and the states’ different substantive statutes and case law. To litigate their clients’ personal injury cases effectively in both states, trial attorneys must have a firm understanding of the key differences in litigation and civil procedure between them and adjust their litigation strategies accordingly.

In my experience litigating personal injury cases in both states, seven key differences are likely to trip up an attorney who is well-versed in one state’s procedures but not the other’s.

Statutes of limitation

Arguably the most important difference between litigating personal injury cases in New Jersey and New York is that the statute of limitations for general negligence claims differs between them.

In New Jersey, generally speaking, per N.J.S.A. § 2A:14-2, the statute of limitations for personal injuries caused by “[a] wrongful act, neglect or default” is two years “after the cause of any such action shall have accrued.” 

In New York, per CPLR § 214, the statute of limitations is three years for personal injury claims. However, per CPLR § 214-A, actions for medical, dental, or podiatric malpractice “must be commenced within two years and six months of the act, omission or failure complained of or last treatment . . . .”

Affidavits/Certificates of merit in medical malpractice cases

Trial attorneys unaware of the difference between the two states regarding filing medical malpractice cases could find their cases dismissed with prejudice.

In New Jersey, N.J.S.A. § 2A:53A-27 requires plaintiffs alleging malpractice claims to file, within 60 days of a defendant filing an answer, an “affidavit of an appropriate licensed person that there exists a reasonable probability that the care, skill or knowledge exercised or exhibited in the treatment, practice or work that is the subject of the complaint, fell outside acceptable professional or occupational standards or treatment practices.” Failing to file an affidavit of merit typically leads to dismissal of the claims with prejudice.

New York requires different documentation earlier in a malpractice case. CPLR § 3012-A requires a complaint alleging medical, dental, or podiatric malpractice to be accompanied by a certificate executed by the plaintiff’s attorney declaring that they have reviewed the facts of the case and consulted with at least one licensed physician, dentist, or podiatrist “who the attorney reasonably believes is knowledgeable in the relevant issues involved in the particular action, and that the attorney has concluded on the basis of such review and consultation that there is a reasonable basis for the commencement of such action.” As with New Jersey’s affidavit requirement, failing to file a 3012-A certificate could lead to the dismissal of the related lawsuit.

Uniform Interrogatories vs. Bill of Particulars

In both New Jersey and New York, parties must provide each other with information about their claims and defenses, but each state addresses this through different mechanisms. New Jersey does this through Uniform Interrogatories, while New York does so through a Bill of Particulars.

New Jersey’s Uniform Interrogatories are a discovery tool for obtaining facts, documentation, testimony, or other information. N.J. Rule of Court 4:17 prescribes the standard forms that must be used for interrogatories in specified civil cases, including those seeking recovery for personal injury, professional malpractice, and property damage to automobiles. Each party may also ask ten supplemental questions without seeking the court’s permission. A judge must approve any additional interrogatories.

Interrogatories must generally be answered in writing and under oath. If the party upon whom the interrogatories are served is unavailable, their authorized agent or representative may answer them, but the party will be bound by their answers. Parties objecting to questions in the interrogatories must either respond by stating that the question is improper or may ask for a hearing to strike the question.

New York’s Bill of Particulars is a response to written questions from one party to the other, to obtain more detailed information regarding a party’s claim or defense. Under certain circumstances, the Bill of Particulars does not have to be signed by the plaintiff and can instead be verified by their attorney. The information demanded in a Bill of Particulars depends on the facts of the case, but in personal injury cases, CPLR § 3043(a) governs the questions that may be asked. Those questions include:

1. The date and approximate time the injury occurred;
2. The approximate location of the incident;
3. A general statement describing acts or omissions constituting negligence;
4. Whether actual or constructive notice is being claimed in cases where notice of a condition is a prerequisite;
5. When actual notice is claimed, a statement of when and to whom it was given;
6. A statement of the injuries and a description of those claimed to be permanent;
7. The length of time the individual was confined to their bed or home;
8. The length of time they were incapacitated and unable to work; and
9. Amounts claimed as special damages for lost earnings, medical services, and medical supplies.

Identifying medical experts in medical malpractice actions

When expert discovery begins, New Jersey requires greater disclosure about medical experts than New York does and permits expert depositions. As a result, unlike in New Jersey courts, litigants in New York courts can shield their medical experts’ identities throughout a case.

In New Jersey, N.J. Rule of Court 4:10-2(d)(1) allows a party to serve interrogatories requiring the other to disclose the name and address of each expert they expect to call at trial, “including a treating physician who is expected to testify and, whether or not expected to testify, of an expert who has conducted an examination pursuant to [Rule] 4:19-1 or to whom a party making a claim for personal injury has voluntarily submitted for examination without court order.”

The interrogatories may also seek information regarding the subjects to be addressed by the expert, the expected substance of any facts or opinions, and the reasoning behind the expert’s opinions. Additionally, a party may request a copy of an expert’s report through the interrogatory process. Per N.J. Rule of Court 4:17-4(e), the report must include:

• A complete statement of the expert’s opinions;
• The expert’s qualifications;
• The basis for their opinions;
• The facts considered;
• Any publications from the previous ten years; and
• Information on the expert’s compensation.

N.J. Rule of Court 4:10-2(d)(2) also allows experts whose report is required to be furnished under (d)(1) to be deposed “as to the opinion stated therein.” Because these expert depositions are part of pretrial discovery, opposing counsel must complete them before the discovery period closes.

In New York, the disclosure of expert witnesses is governed by CPLR § 3101(d), but there is no general rule that expert witnesses need to be named before discovery is complete. CPLR § 3101(d)(1)(i) states that, upon request, the parties must identify the experts that the parties expect to call at trial as witnesses and disclose, in reasonable detail, the subject on which each expert is expected to testify and the substance of the facts and opinions supporting that testimony. 

In a medical malpractice action, CPLR § 3101(d)(1)(i) goes further and permits a party to omit the names of its medical experts altogether, disclosing only their qualifications and the substance of the opinions to which they are expected to testify. Additionally, CPLR § 3101(d)(1)(ii) allows any party to make a written offer, served on all parties and filed with the court, to disclose an expert’s name and produce the expert for a deposition. If all parties accept the offer, they all must make their experts available for a deposition. Absent this offer or another voluntary agreement to make an expert available for a deposition, New York does not require expert witnesses to sit for depositions.

Wrapping up discovery

Attorneys practicing in New Jersey and New York should be mindful of the way discovery ends in each jurisdiction.

In New York, a party’s filing of a Note of Issue attests that discovery has been completed and that the matter is ready for trial. 22 NYCRR § 202.21 states that “no action or special proceeding shall be deemed ready for trial or inquest unless there is first filed a note of issue accompanied by a certificate of readiness, with proof of service on all parties entitled to notice,” which should include:

• The county clerk’s index number;
• The name of the judge to whom the action is assigned;
• The name, office address, and telephone number of each attorney who has appeared;
• The name, address, and telephone number of any party who has appeared pro se; and 
• The name of any insurance carrier acting on behalf of any party.

Section 202.21(e) allows a party to move to vacate a Note of Issue within 20 days after service by showing that the case isn’t actually ready for trial or that the certificate of readiness materially misstates the case’s readiness. After that, vacatur generally requires good cause. At any time, a court may vacate a Note of Issue on its own motion if the certificate misstates a material fact or fails to comply with section 202.21.

In New Jersey, courts set a matter’s discovery end date (DED). If both parties consent to an extension of the DED, courts will grant an additional 60 days for discovery.

If the parties don’t agree to a 60-day extension or more time is needed, they must move to extend discovery before the end of the discovery period. N.J. Rule of Court 4:24-1(c) allows a judge to extend the DED for good cause if a party files a motion prior to the end date. Examples of good cause include situations where significant documents requiring additional follow-up were produced late in discovery, depositions are required from newly identified witnesses, and significant records have been requested but not produced.

Once a trial or arbitration date has been set, courts will only grant an extension for exceptional circumstances. New Jersey courts have generally applied a four-part test to establish exceptional circumstances. The test requires a showing of the following:

• Due diligence during the discovery period;
• The additional discovery sought is essential;
• A valid explanation of why an extension was not requested earlier; and
• The delay was the result of circumstances beyond the client’s control

In my experience, parties can more easily obtain an extension of a Note of Issue than an extension of a DED.

New Jersey’s mandatory arbitration

Trial attorneys litigating New Jersey cases may need to factor into their litigation strategy the state’s requirement that parties in certain civil actions take part in mandatory, non-binding arbitration. New York does not have a similar requirement.

Under N.J. Rule of Court 4:21A, the following actions are subject to mandatory arbitration:

• Automobile negligence;
• Personal injury actions, except for professional malpractice and product liability; and
• Actions on a book account or instrument of obligation, personal injury protection claims against plaintiff’s insurer, and other contract and commercial actions identified as appropriate for arbitration

The arbitration hearings are conducted in a courthouse, but the testimony given and the arbitrator’s findings may not be used in any subsequent trial. The arbitrator must file the award within ten days after the arbitration is completed. The parties then have thirty days to reject the filed award and request a de novo trial. When a de novo trial is sought, the case must be added to the court’s trial calendar within 90 days.

Attorneys’ roles in voir dire

Many trial attorneys will tell you that personal injury trials are often won or lost during voir dire. Understanding how voir dire is conducted in New Jersey versus in New York is a vital step toward ‌victory at trial.

In New Jersey, the judge will preside over voir dire. The process typically begins with the court issuing written interrogatories to the jurors, chosen from a list of model jury selection questions. Attorneys may also submit questions, but they must propose them before voir dire begins. A judge may allow an attorney to participate in the questioning, but can limit the extent of the questions asked.

While the jurors are being questioned, a judge may allow additional questions if they find them appropriate. The judge must rule on the record on any voir dire questions proposed by an attorney or on any attorney’s participation in the questioning.

In New York, however, attorneys typically conduct voir dire without the assigned judge present. But a judge will often preside over the beginning of the process and may be present during any part of jury selection. The judge also remains available to hear for-cause challenges. Without a judge present, attorneys in New York personal injury cases generally have more opportunity to question potential jurors about their backgrounds, experiences, and biases than their New Jersey counterparts.

Two jurisdictions’ litigation and civil procedures worth mastering

Mastering one state’s litigation and civil procedures is hard enough, but trial attorneys with active New Jersey and New York practices should strive to master both states’ procedures to increase their chances of success when handling matters in both jurisdictions. Many differences exist between the states’ procedures, but I believe the seven above are most likely to trap the unwary dual-state trial attorney who’s rusty on one state’s procedures.

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Dawn M. Pinnisi is a founding partner and trial attorney at Varcadipane & Pinnisi, P.C., where she predominantly handles injury claims, including traumatic brain injury claims, in New York and New Jersey on behalf of victims of product liability, professional malpractice, and negligence. She can be reached at [email protected].

Reprinted with permission from the November 10, 2026, issue of The New York Law Journal. © 2026 ALM Global Properties LLC, trading as Centellic. Further duplication without permission is prohibited. All rights reserved

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