No, you generally cannot sue after arbitration. Once an arbitrator issues an award, the losing party cannot file a fresh lawsuit over the same dispute and ask a judge to decide it differently. What you can do is ask a court to vacate, modify, or correct the award, but only on a handful of narrow procedural grounds set out in the Federal Arbitration Act, and only within three months of receiving the decision.
Why the Award Is Usually the End of the Road
The point of arbitration is finality. When you signed a contract with an arbitration clause, you agreed to let a private decision-maker resolve the dispute in place of a judge or jury. Federal law backs that bargain hard. Under the Federal Arbitration Act, when the winning party asks a court to confirm the award, the court “must grant such an order” unless one of a few specific statutory exceptions applies.1Office of the Law Revision Counsel. 9 USC 9 – Award of Arbitrators; Confirmation; Jurisdiction; Procedure
Once confirmed, the award becomes a court judgment with the same enforcement power as any verdict after trial. The winning party can garnish wages, seize assets, or use any other collection tool available to a judgment creditor. Refiling the case in court is not an option, and neither is asking a judge to reweigh the evidence or reconsider the arbitrator’s legal reasoning.
The Supreme Court closed the door on broader review in Hall Street Associates v. Mattel, holding that the FAA’s grounds for vacating or modifying awards are exclusive. Allowing more, the Court said, “would rub too much against the grain” of a statute that requires confirmation unless a specific exception is met.2Legal Information Institute. Hall Street Associates, L.L.C. v. Mattel, Inc. The ruling also means the parties cannot contractually agree to expanded court review. Even if your arbitration agreement promises judicial second-guessing of the arbitrator’s legal conclusions, that clause is unenforceable.
The Four Grounds That Can Get an Award Thrown Out
Federal law recognizes four situations where a court can vacate an award entirely. Each targets a defect in the process, not the result.3Office of the Law Revision Counsel. 9 USC 10 – Same; Vacation; Grounds; Rehearing
Corruption, fraud, or unfair dealing. The other side cheated to obtain the award. Submitting forged documents that were central to the arbitrator’s decision would qualify, as would bribing the arbitrator or hiding evidence the opposing party was legally entitled to see.
Evident partiality or corruption in the arbitrator. The arbitrator had an undisclosed relationship or financial interest that compromised neutrality. Finding out afterward that the arbitrator held stock in one of the companies involved is a classic example. The partiality has to be evident, not speculative.
Arbitrator misconduct. The arbitrator ran the hearing unfairly in a way that prejudiced one side. Refusing to postpone when a key witness was hospitalized, or refusing to hear plainly relevant evidence, is the sort of thing this covers.
Exceeding authority. The arbitrator ruled on issues outside the scope of the arbitration agreement. If the agreement covered a contract dispute and the arbitrator also awarded damages for an unrelated personal injury claim, that part of the award went beyond what the arbitrator was authorized to decide.
Notice what is not on this list: “the arbitrator got it wrong.” Courts will not re-weigh evidence, reassess witness credibility, or check whether the arbitrator applied the correct legal standard. That is the trade-off you accepted when you agreed to arbitrate, and it is where most challenges collapse.
When Modification Is the Better Ask
Not every problem with an award calls for tearing the whole thing down. The FAA lets a court modify or correct an award in three situations:
- The arbitrator clearly miscalculated damages or described the wrong person, property, or thing.
- The arbitrator ruled on something outside the submission, but only if removing that piece leaves the rest of the decision intact.
- The award has a technical defect in form that does not change its substance.
A modifying court adjusts the result to match what the arbitrator clearly intended while preserving the core decision.4Office of the Law Revision Counsel. 9 USC 11 – Modification or Correction; Grounds; Order If the arbitrator ran a fair process and reached a defensible decision but garbled the numbers or the names on the page, modification is the right fit. It is also more likely to succeed than vacatur, because you are asking the court to fix the award rather than destroy it.
Manifest Disregard of the Law
Some federal courts recognize a fifth, non-statutory ground called “manifest disregard of the law.” It applies when the arbitrator knew a clear, well-established rule governed the case and deliberately ignored it. Being wrong about the law is not enough; you have to show the arbitrator understood the law and chose to defy it.
After Hall Street held the statutory grounds exclusive, the standing of manifest disregard became genuinely uncertain. Federal circuits have split: some still recognize it, often as a subset of the statutory “exceeded their powers” ground, some treat it as eliminated, and others have declined to decide.5Yale Law Journal. The Mess of Manifest Disregard Whether this argument is available depends on the circuit your case sits in, and even where it survives, the proof required is extraordinary.
The Three-Month Deadline
The window to challenge an award is short. You must serve notice of a motion to vacate or modify within three months of the award being delivered.6Office of the Law Revision Counsel. 9 USC 12 – Notice of Motions to Vacate or Modify; Service; Stay of Proceedings Miss it, and you have almost certainly lost your chance.
Meanwhile, the winning party has up to one year to ask a court to confirm the award and turn it into an enforceable judgment.1Office of the Law Revision Counsel. 9 USC 9 – Award of Arbitrators; Confirmation; Jurisdiction; Procedure Doing nothing is not a neutral choice. While you sit still, the other side can lock in the result.
The motion has to identify which specific statutory ground you are relying on and back it with evidence. Vague complaints about unfairness will not move a court. The burden of proof rests on the party challenging the award.
Getting Into the Right Court
Motions to vacate go to the federal district court in the district where the award was made.3Office of the Law Revision Counsel. 9 USC 10 – Same; Vacation; Grounds; Rehearing But pointing to the FAA is not enough to get you through the door.
In Badgerow v. Walters, the Supreme Court held that the FAA itself does not create federal jurisdiction. You need an independent basis, typically diversity of citizenship with more than $75,000 at stake, or a federal question embedded in the underlying dispute.7Justia U.S. Supreme Court. Badgerow v. Walters, 596 U.S. ___ (2022) If your arbitration involved a purely state-law contract dispute between parties from the same state, federal court is likely closed to you. You would file in state court instead, under whichever state arbitration statute applies. Most states have adopted some version of the Uniform Arbitration Act, and the grounds for vacatur generally track the FAA’s categories, with some variation in detail.
What Happens If You Win
Winning a motion to vacate does not put your case in front of a jury. When a court vacates an award, the dispute typically goes back to arbitration. The FAA gives the court discretion to order a rehearing before the arbitrators, provided the time limits in the original arbitration agreement have not run.3Office of the Law Revision Counsel. 9 USC 10 – Same; Vacation; Grounds; Rehearing The new hearing may go before different arbitrators. Either way, your case stays outside the courtroom.
If the award is merely ambiguous rather than defective, a court may send it back to the original arbitrator for clarification. The arbitrator can explain what the decision meant but cannot change its substance.
The Financial Risk of a Weak Challenge
Filing a motion to vacate is not free, and losing one can cost more than the filing fee. Federal court filing fees run around $405, but the real expense is legal representation. These challenges turn on technical procedural arguments, and attorney time adds up in a proceeding where the odds already favor the other side.
Courts also have tools to punish challenges they view as meritless. An attorney who unreasonably multiplies proceedings can be personally ordered to pay the other side’s excess costs and fees.8Office of the Law Revision Counsel. 28 USC 1927 – Counsel’s Liability for Excessive Costs Frivolous appeals can trigger damages and double costs.9United States Court of Appeals for the Second Circuit. FRAP 38 – Frivolous Appeal; Damages and Costs Courts have said openly that a “realistic threat of sanctions” is what keeps baseless challenges from undermining the efficiency that makes arbitration worthwhile.
None of this means you should never challenge an award. If your arbitrator had an undisclosed financial conflict, or the other side committed fraud, or the arbitrator ruled on claims that were never submitted, you have real grounds and should act quickly. But if the theory is simply that the arbitrator got it wrong, that argument does not exist in federal law, and pursuing it can leave you paying the other side’s legal bills on top of the award you already owe.