What demanding arbitration means and when you can do it

Demanding arbitration means you are asking to resolve your uninsured motorist claim outside court, in front of a neutral third party called an arbitrator instead of a judge or jury. In California, you have the right to demand arbitration if your insurance policy includes an arbitration clause — most do — and your insurer has denied or underpaid your uninsured motorist claim. The demand must be made in writing, and it stops the clock on any lawsuit you might file. Your insurer can also demand arbitration, and either way, once arbitration is demanded, the case moves out of court.

This matters because arbitration is usually faster and cheaper than litigation, but it also means you give up the right to appeal and you cannot go to trial. You need to understand what you are trading before you demand it. The process is governed by California Code of Civil Procedure Section 1280 and following sections, and your insurance policy's arbitration clause sets the specific rules you both must follow.

Key Takeaways

  • You can demand arbitration in writing if your policy has an arbitration clause and your insurer has denied or underpaid your uninsured motorist claim.
  • The demand must be sent to your insurer in writing and must reference the specific policy and claim, and you should keep proof of delivery.
  • Once arbitration is demanded, you have a set time (usually 30 to 60 days) to select an arbitrator together, or a neutral body will assign one.
  • Arbitration is binding, meaning you cannot appeal the arbitrator's decision even if you disagree with it, so understand the trade-offs before demanding it.
  • You can represent yourself in arbitration, but many people hire an attorney because the process still requires evidence, witnesses, and legal arguments.

How to send a written demand for arbitration

Your demand must be in writing and must clearly state that you are demanding arbitration under your insurance policy. Include your policy number, the date of the accident, the claim number if one has been assigned, and a brief description of the dispute — for example, "I am demanding arbitration of my uninsured motorist claim because the insurer denied coverage" or "because the insurer's settlement offer of $X does not reflect my damages." Do not make threats or use inflammatory language; keep it factual and professional.

Send the demand to the address listed in your policy for notices, or to the claims adjuster handling your file if you know who that is. Use certified mail with return receipt requested, or email with read receipt enabled, so you have proof the insurer received it. Keep a copy for your records. Some policies specify a particular form or method; check your policy language before sending. If you cannot find the arbitration clause or are unsure whether your policy includes one, call your insurer's claims line and ask directly — they are required to tell you.

The demand itself does not need to be long or formal. A one-page letter stating the facts and your demand is sufficient. However, if you have already exchanged letters with the insurer about the claim, attach copies of those to show the history of the dispute. This helps the arbitrator understand the context when the case begins.

What happens after you demand arbitration

Once your insurer receives your written demand, they have a set period — usually 30 days, but check your policy — to respond. They may agree to arbitration, or they may file a response challenging whether arbitration is required. If they agree, you both move to the next step: selecting an arbitrator. If they challenge, a court may need to decide whether the arbitration clause is valid and binding, which delays the process but is rare in uninsured motorist cases.

If both sides agree to arbitrate, you will need to select an arbitrator within the timeframe your policy specifies. Many policies require you to use a specific arbitration provider, such as JAMS (Judicial Arbitration and Mediation Services) or AAA (American Arbitration Association). These organizations maintain lists of arbitrators, and you and your insurer typically take turns striking names you object to until one arbitrator remains. If you cannot agree, the provider assigns one. This selection process usually takes 30 to 60 days.

Once an arbitrator is assigned, they will set a hearing date, usually within 60 to 90 days. You will receive a notice with the date, time, and location (or whether it will be virtual). The arbitrator may also issue a schedule for exchanging documents and witness lists before the hearing.

Preparing your case for the arbitration hearing

Arbitration hearings follow rules similar to trial, but they are usually shorter and less formal. You will need to present evidence of your damages — medical records, repair estimates, pay stubs showing lost wages, receipts for other out-of-pocket costs — and you may need to testify about the accident and your injuries. The insurer will present their evidence and arguments for why they denied or underpaid the claim. The arbitrator will listen to both sides and then issue a written decision.

Before the hearing, gather all documents that support your claim. If you have medical records, organize them chronologically. If you have photos of vehicle damage, the accident scene, or your injuries, compile them. If you have witnesses, contact them now to confirm they will testify or provide a written statement. If you are claiming lost wages, get a letter from your employer on company letterhead stating the dates you missed work and your hourly rate or salary.

You do not have to hire an attorney to represent yourself in arbitration, but many people do because the process still requires presenting evidence clearly and responding to the insurer's arguments. If you decide to represent yourself, ask the arbitrator at the start of the hearing whether they have any procedural rules you should know about. If you hire an attorney, they will handle most of the preparation and presentation, though you will still need to provide them with all your documents and be available to testify.

Understanding the costs and timeline of arbitration

Arbitration is usually cheaper than going to court because there are no filing fees, no discovery disputes, and no motion practice. However, you will pay the arbitrator's fee, which varies by provider and arbitrator but typically ranges from a few hundred to a few thousand dollars depending on the complexity of the case. Your policy may specify who pays this fee — some policies say the insurer pays, some say you split it, and some say the losing party pays. Check your policy language.

The timeline from demand to decision is usually 4 to 6 months, compared to 1 to 3 years for a lawsuit. This is one of the main advantages of arbitration. However, if the insurer contests whether arbitration is required, that dispute can add 2 to 4 months before arbitration even begins.

Once the arbitrator issues a decision, it is final and binding. You cannot appeal it, even if you believe the arbitrator made a mistake on the law or the facts. The only narrow exceptions are fraud, corruption, or a decision that violates California public policy — these are extremely rare. This is the biggest trade-off of arbitration: speed and cost in exchange for no right of appeal.

When demanding arbitration may not be the right choice

Demanding arbitration makes sense if your claim is straightforward — for example, the insurer clearly owes you money but is underpaying, or they denied coverage without a good reason. It also makes sense if you want to resolve the dispute quickly and you are comfortable with a binding decision.

Arbitration may not be the right choice if your case is complex, involves significant damages, or if you believe you have a strong legal argument that an appeals court might agree with. Arbitration also may not be right if you are unsure whether you have a valid claim, because you will not get a second opinion. If you are uncertain, consider consulting with an attorney before demanding arbitration. Many attorneys offer free initial consultations and can review your policy and claim to advise you on whether arbitration is in your interest.

You also should not demand arbitration if you have already filed a lawsuit in court. Once a lawsuit is filed, the rules change, and demanding arbitration at that point may not stop the lawsuit. If you are considering arbitration, do it before filing in court.

What to do if your insurer demands arbitration instead

Your insurer can also demand arbitration, and they often do. If they send you a written demand for arbitration, you have the same rights and obligations: you must respond within the timeframe specified in your policy, and you must participate in selecting an arbitrator. You cannot ignore the demand or refuse to arbitrate if your policy includes an arbitration clause.

If you receive a demand from your insurer and you do not want to arbitrate, you can file a motion in court to challenge whether the arbitration clause is valid or enforceable. However, this is difficult in California, because courts generally enforce arbitration clauses in insurance contracts. You would need a strong legal argument — for example, that the clause was unconscionable or that it violates California public policy — and you should consult an attorney before attempting this.

Frequently Asked Questions

Can I demand arbitration if I have already filed a lawsuit?

If you have already filed a lawsuit in court, demanding arbitration at that point is complicated and may not work. The insurer can move to compel arbitration, but the court has already taken jurisdiction. It is better to demand arbitration before filing a lawsuit. If you are in court and the insurer demands arbitration, consult an attorney about your options.

What if the arbitrator rules against me?

If the arbitrator rules against you, you cannot appeal the decision. Arbitration is final and binding. The only exceptions are if the arbitrator committed fraud, corruption, or made a decision that violates California public policy — these are extremely rare. Before demanding arbitration, make sure you are comfortable with this risk.

Do I need an attorney for arbitration?

You can represent yourself, but arbitration still requires presenting evidence and legal arguments. Many people hire an attorney because it increases the chances of a favorable outcome. If your claim is small or straightforward, self-representation may be reasonable. If your claim is large or complex, an attorney is usually worth the cost.

How long does arbitration take from start to finish?

From the time you demand arbitration to the time the arbitrator issues a decision, the process usually takes 4 to 6 months. This includes time to select an arbitrator, exchange documents, and hold the hearing. A lawsuit in court typically takes 1 to 3 years, so arbitration is significantly faster.

Who pays for the arbitrator?

Your policy specifies who pays the arbitrator's fee. Some policies say the insurer pays, some say you split it, and some say the losing party pays. Check your policy language or ask your insurer before demanding arbitration so you know what to expect.