Skip to main content
Collateral estoppel does not preclude an arbitrator from ruling differently from another arbitrator on the same issue
Procedural Issues

Collateral estoppel does not preclude an arbitrator from ruling differently from another arbitrator on the same issue

By Jason Tenenbaum 6 min read

Why Trust This Analysis

This article is part of our ongoing procedural issues coverage, with 196 published articles analyzing procedural issues issues across New York State. Attorney Jason Tenenbaum brings 24+ years of hands-on experience to this analysis, drawing from his work on more than 1,000 appeals, over 100,000 no-fault cases, and recovery of over $100 million for clients throughout Nassau County, Suffolk County, Queens, Brooklyn, Manhattan, and the Bronx. For personalized legal advice about how these principles apply to your specific situation, contact our Long Island office at (516) 750-0595 for a free consultation.

Key Takeaways

  • New York no-fault insurance law is governed by Insurance Law §5102-§5108 and 11 NYCRR 65
  • Strict timing and verification rules apply to denials of medical benefits
  • Procedural compliance — mailing, verification, EUO/IME scheduling — is often dispositive
  • Consult an experienced New York attorney for case-specific guidance

The doctrine of collateral estoppel, also known as issue preclusion, generally prevents relitigation of issues that have been fully and fairly litigated in prior proceedings. In New York, this doctrine applies to arbitration awards when the same issue arises in subsequent court proceedings. However, the application of collateral estoppel between different arbitration proceedings presents a more complex question. The intersection of no-fault insurance arbitrations and supplementary uninsured/underinsured motorist arbitrations creates a scenario where the same factual issues, such as medical causation, may be litigated twice before different arbitrators under different insurance provisions.

The policy rationales underlying collateral estoppel include judicial economy, consistency of results, and the fairness of requiring parties to litigate issues only once. When arbitration awards bind the parties in subsequent court proceedings, these rationales are served by treating the arbitral determination as conclusive. However, arbitration-to-arbitration preclusion raises distinct concerns. Arbitration is a contractual forum created by the parties’ agreement, and the scope of arbitral authority derives from that agreement. Different arbitrations may involve different parties, different contractual provisions, and different standards of proof or decision-making frameworks.

In the context of automobile insurance, New York law provides both first-party no-fault benefits for medical expenses and lost wages regardless of fault, and supplementary uninsured/underinsured motorist coverage for damages exceeding the tortfeasor’s insurance when the claimant bears no comparative fault. These coverages serve distinct purposes and are subject to distinct statutory and contractual frameworks. The question presented in Matter of Falzone is whether a no-fault arbitrator’s finding regarding medical causation should bind a subsequent SUM arbitrator addressing the same accident and injuries.

Free Consultation · No Fee Unless We Win

Does this apply to your situation?

Every case is different. Get a free, confidential case review from an experienced attorney who can tell you exactly where you stand.

Case Background

In Matter of Falzone v New York Central Mutual Fire Insurance Company, the claimant was injured in an automobile accident and sought no-fault benefits from the defendant insurer, which provided both no-fault and SUM coverage. The claimant proceeded to no-fault arbitration, where the arbitrator determined that the claimant’s medical treatment was causally related to the accident and awarded benefits accordingly. The defendant’s challenge to causation was unsuccessful before the no-fault arbitrator.

Subsequently, the claimant settled the underlying tort claims against the at-fault driver for that driver’s policy limits, which did not fully compensate the claimant’s injuries. The claimant then sought SUM benefits from the defendant insurer under the same policy that had provided no-fault coverage. The matter proceeded to SUM arbitration, and the defendant again challenged medical causation. Despite the no-fault arbitrator’s prior determination of causation, the SUM arbitrator ruled in favor of the insurer, finding that causation had not been established. The claimant sought to vacate the SUM award, arguing that the no-fault arbitrator’s causation finding should have precluded relitigation of that issue.

Jason Tenenbaum’s Analysis

Matter of Falzone v New York Cent. Mut. Fire Ins. Co., 2010 NY Slip Op 07417 (2010)

I thought this case was crazy when the Appellate Division, Fourth Department held as it did. Well, the Court of Appeals has joined in the melee, for reasons I do not understand.

Factually, as seen above, this case involved the potential collateral estoppel effect of an adverse arbitration award in the realm of an SUM arbitration. The claimant prevailed at the no-fault arbitration despite the challenge to causation. Cases settled for policy limit and then claimant goes for SUM benefits. SUM arbitrator disregards the no-fault arbitrators finding of causation and rules in favor of carrier.

Third-Department said this is acceptable. The Court of Appeals concured. The big caveat here is that an arbitrator’s finding is collateral issue for judicial actions based upon the same issue.

So in this case, the Claimant should have filed a court action against the SUM insurer. (See Justice Piggot’s dissent). The no-fault arbitrator’s findings would then be collateral estoppel against the SUM carrier. Of course, should the no-fault carrier and the SUM carrier be different, then collateral estoppel is not in play.

Also, this new rule does not seem to apply to res judicata, as opposed to collateral estoppel. Something to keep in mind.

The Court of Appeals’ decision in Falzone establishes a significant limitation on the preclusive effect of arbitration awards in subsequent arbitration proceedings. By holding that one arbitrator’s findings do not collaterally estop relitigation before another arbitrator, even when the same parties and issues are involved, the Court created a doctrinal distinction between arbitration-to-court preclusion and arbitration-to-arbitration preclusion. This distinction reflects concerns about the contractual nature of arbitration and the independence of different arbitral forums.

The practical consequence of this rule is that claimants may find themselves relitigating identical factual issues in sequential arbitrations arising from the same accident. This outcome appears to contradict the efficiency and consistency rationales underlying collateral estoppel doctrine. However, the Court’s reasoning suggests that the contractual and informal nature of arbitration, combined with the limited scope of arbitral authority, makes arbitration awards less suitable as preclusive determinations in other arbitral contexts.

Critically, the Falzone court preserved the rule that arbitration awards do have collateral estoppel effect in subsequent court proceedings. This creates a strategic fork in the road for claimants: pursuing a court action rather than arbitration for the second claim preserves the preclusive effect of the first arbitration’s findings. Justice Pigott’s dissent emphasized this point, arguing that the majority’s rule creates an incentive structure that discourages arbitration and may lead to forum manipulation.

The decision also distinguishes collateral estoppel from res judicata, suggesting that claim preclusion principles may apply differently than issue preclusion in the arbitration context. This distinction requires careful analysis of whether a subsequent arbitration presents the same claim or merely overlapping issues.

Practical Implications

Insurance claimants and their attorneys must carefully consider forum selection when pursuing overlapping claims under different insurance coverages. If a favorable arbitration award has been obtained on contested factual issues, filing a court action rather than proceeding to arbitration on the related claim may preserve the preclusive effect of those findings. This strategic consideration applies particularly when the same insurer provides both coverages, as different insurers would not be bound by arbitral findings against each other.

Insurance carriers defending overlapping claims should be aware that unfavorable arbitration awards on contested issues do not preclude relitigating those issues in subsequent arbitrations. This creates opportunities to present different evidence or arguments in the second forum. However, carriers must also recognize that if the claimant chooses court litigation for the subsequent claim, the prior arbitration findings will have preclusive effect.

The decision creates potential inefficiency and inconsistency in insurance dispute resolution. The same insurer may prevail on causation in SUM arbitration after losing on that issue in no-fault arbitration involving the same accident and claimant. This seemingly contradictory result highlights the importance of thorough preparation for each arbitration and the need to address all defenses fully in each proceeding, regardless of outcomes in prior related arbitrations.

For additional guidance on this topic, see:

If you have a case involving these issues on Long Island or in the New York City metropolitan area, the Law Office of Jason Tenenbaum, P.C. offers free consultations. Call (516) 750-0595 or contact our office online.

Legal Context

Why This Matters for Your Case

New York law is among the most complex and nuanced in the country, with distinct procedural rules, substantive doctrines, and court systems that differ significantly from other jurisdictions. The Civil Practice Law and Rules (CPLR) governs every stage of civil litigation, from service of process through trial and appeal. The Appellate Division, Appellate Term, and Court of Appeals create a rich and ever-evolving body of case law that practitioners must follow.

Attorney Jason Tenenbaum has practiced across these areas for over 24 years, writing more than 1,000 appellate briefs and publishing over 2,353 legal articles that attorneys and clients rely on for guidance. The analysis in this article reflects real courtroom experience — from motion practice in Civil Court and Supreme Court to oral arguments before the Appellate Division — and a deep understanding of how New York courts actually apply the law in practice.

About This Topic

Procedural Issues in New York Litigation

New York civil procedure governs every stage of litigation — from pleading requirements and service of process to motion practice, discovery deadlines, and trial procedures. The CPLR creates strict procedural rules that can make or break a case regardless of the underlying merits. These articles examine the procedural pitfalls, timing requirements, and strategic considerations that practitioners face in New York state courts, with a particular focus on no-fault insurance and personal injury practice.

196 published articles in Procedural Issues

Keep Reading

More Procedural Issues Analysis

FAQ

How to Talk to a Judge in New York: What to Say, What to Avoid, and How to Present Yourself

Address the judge as 'Your Honor,' stand when you speak, wait to be recognized, and keep answers short and honest. A Long Island trial lawyer explains.

Feb 24, 2026
Evidence

CPLR § 2106 Amendment Eliminates Affidavit Notarization Requirement: What This Means for New York Litigation

New York's CPLR 2106 permits affirmations in place of many sworn documents. See the 2024 and 2025 changes, exceptions, and historical case notes.

Feb 18, 2026
Res Judicata

This one is wrong

Court incorrectly applies res judicata in no-fault case where different treatment periods and lack of specific findings should prevent collateral estoppel application.

Apr 9, 2014
2106 and 2309

So the newest 2309(c) case now holds that this statute is irrelevent

Second Department rules that CPLR 2309(c) notarization defects are not fatal when corrective certification can be provided nunc pro tunc under CPLR 2001.

Apr 8, 2012
Procedural Issues

Shady Grove v. Allstate: How Federal Court Access Transformed NY No-Fault Class Actions

How Shady Grove v. Allstate opened federal courts to NY no-fault class actions. Expert analysis of Erie doctrine impact and forum shopping strategies.

Apr 2, 2010
Procedural Issues

Combating Litigation Delay Tactics in New York No-Fault Insurance Cases

Insurance companies use delay tactics to avoid paying no-fault claims. Learn how courts combat these strategies and protect your rights.

Dec 22, 2018
View all Procedural Issues articles

Was this article helpful?

Disclaimer: This article is published by the Law Office of Jason Tenenbaum, P.C. for informational and educational purposes only. It does not constitute legal advice, and no attorney-client relationship is formed by reading this content. The legal principles discussed may not apply to your specific situation, and the law may have changed since this article was last updated.

New York law varies by jurisdiction — court decisions in one Appellate Division department may not be followed in another, and local court rules in Nassau County Supreme Court differ from those in Suffolk County Supreme Court, Kings County Civil Court, or Queens County Supreme Court. The Appellate Division, Second Department (which covers Long Island, Brooklyn, Queens, and Staten Island) and the Appellate Term (which hears appeals from lower courts) each have distinct procedural requirements and precedents that affect litigation strategy.

If you need legal help with a procedural issues matter, contact our office at (516) 750-0595 for a free consultation. We serve clients throughout Long Island (Huntington, Babylon, Islip, Brookhaven, Smithtown, Riverhead, Southampton, East Hampton), Nassau County (Hempstead, Garden City, Mineola, Great Neck, Manhasset, Freeport, Long Beach, Rockville Centre, Valley Stream, Westbury, Hicksville, Massapequa), Suffolk County (Hauppauge, Deer Park, Bay Shore, Central Islip, Patchogue, Brentwood), Queens, Brooklyn, Manhattan, the Bronx, Staten Island, and Westchester County. Prior results do not guarantee a similar outcome.

Jason Tenenbaum, Personal Injury Attorney serving Long Island, Nassau County and Suffolk County

Reviewed & Verified By

Jason Tenenbaum, Esq.

Jason Tenenbaum is a personal injury attorney serving Long Island, Nassau & Suffolk Counties, and New York City. Admitted to practice in NY, NJ, FL, TX, GA, MI, and Federal courts, Jason is one of the few attorneys who writes his own appeals and tries his own cases. Since 2002, he has authored over 2,353 articles on no-fault insurance law, personal injury, and employment law — a resource other attorneys rely on to stay current on New York appellate decisions.

Education
Syracuse University College of Law
Experience
24+ Years
Articles
2,353+ Published
Licensed In
7 States + Federal

Free Consultation — No Upfront Fees

Injured on Long Island?
We Fight for What You Deserve.

Serving Nassau County, Suffolk County, and all of New York City. You pay nothing unless we win.

The Law Office of Jason Tenenbaum, P.C. has been fighting for the rights of injured New Yorkers since 2002. With over 24 years of experience handling personal injury, no-fault insurance, employment discrimination, and workers' compensation cases, Jason Tenenbaum brings the legal knowledge and courtroom experience your case demands. Every consultation is free and confidential, and we work on a contingency fee basis — meaning you pay absolutely nothing unless we recover compensation for you.

Available 24/7  ·  No fees unless you win  ·  Serving Long Island & NYC

Injured? Don't Wait.

Get Your Free Case Review Today

No fees unless we win — available 24/7 for emergencies.

Free Consultation Free Case Review