California Mediation: Process, Costs, and Enforceability

Mediation in California is a confidential, non-binding process in which a neutral third party helps disputing sides negotiate their own resolution, and it is used across family, civil, and employment cases either by court referral or voluntary agreement. The state backs the process with some of the strongest confidentiality protections in the country under Evidence Code Sections 1115 through 1128, but those protections come with rules — most importantly, a written settlement reached at mediation is only enforceable in court if it contains specific language required by Evidence Code Section 1123.

When California Courts Use Mediation

Mediation appears in nearly every area of California practice, and in some cases it is required before a judge will hear the dispute. Family Code Section 3170 directs the court to send contested custody and visitation issues to mediation before those issues can be litigated.1Justia Law. California Family Code 3170-3173 The idea is to get parents building a parenting plan together, which tends to produce arrangements that hold up.

For general civil disputes, the Civil Action Mediation Act (Code of Civil Procedure Section 1775 and following) authorizes courts to refer cases to mediation as an alternative to trial, particularly where the amount in controversy does not exceed $50,000.2California Legislative Information. California Code of Civil Procedure 1775 Outside that formal program, judges routinely push contract disputes, personal injury claims, real estate matters, and employment cases toward mediation. Employment cases benefit especially from the private setting: a mediated resolution avoids public exposure and can include terms a court could never order, such as agreed job references or structured payments.

How the Process Actually Runs

Most mediations follow a predictable arc. Before the session, parties and their attorneys prepare confidential briefs summarizing the facts, the legal issues, and their positions, giving the mediator a head start.

The session itself usually opens with everyone in the same room. The mediator explains ground rules, emphasizes confidentiality, and gives each side an uninterrupted chance to speak. Hearing the other party describe the dispute in their own words, not filtered through pleadings, often shifts perspectives in ways that make settlement possible.

After that opening, the mediator typically moves to private caucuses, meeting separately with each side. This is where the real work happens. The mediator can be candid about the weaknesses in a party’s case, explore what they actually need as distinct from what they’ve demanded, and carry offers back and forth to narrow the gap. Straightforward disputes may resolve in a few hours. Complex commercial cases can stretch across multiple sessions.

What Mediation Costs in California

Private mediator rates typically run from roughly $200 to $1,000 per hour, depending on the mediator’s experience, the complexity of the dispute, and the market. Mediators in San Francisco and Los Angeles tend to charge more than those in smaller cities. A half-day session in a straightforward case might cost each side $1,000 to $2,500 for the mediator’s time alone, with attorney fees on top of that. Complex multi-party commercial mediations run considerably higher.

Court-connected mediation programs are cheaper. Some offer reduced-rate or volunteer mediators, especially for cases referred under the Civil Action Mediation Act. Even at private rates, mediation almost always costs less than taking a case through discovery and trial, which is a large part of why courts push it so hard.

Choosing a Mediator

Parties usually select a mediator by agreement or through a court-connected panel. California has no statewide licensing requirement, but the Dispute Resolution Programs Act has long required at least 40 hours of basic mediation training for mediators in court-connected programs.3UC Davis Continuing and Professional Education. 40-Hour Mediation

SB 940, effective January 1, 2025, added a voluntary statewide certification program for mediators and other ADR professionals. Certified mediators need qualifying training, ongoing continuing education, and enough recent mediations to show active practice.4American Arbitration Association. Mediation Aspects of SB940 in California Because certification is voluntary, uncertified mediators can still practice; the program simply gives parties a way to verify credentials. Many court panels impose additional requirements of their own.

Whatever their credentials, a mediator’s role is strictly neutral. The Evidence Code defines a mediator as “a neutral person who conducts a mediation,” including anyone designated to assist or communicate with participants in preparation.5California Legislative Information. California Evidence Code 1115 – Mediation Definitions A mediator cannot rule on the merits, impose an outcome, or give legal advice to either side. That is the fundamental difference from arbitration. In arbitration, someone decides for you. In mediation, you decide for yourself.

What Confidentiality Protects

California’s mediation confidentiality is codified in Evidence Code Sections 1115 through 1128. The central provision, Section 1119, sets up three layers of protection. Nothing said or admitted during mediation is admissible or subject to discovery in any later noncriminal proceeding. No document prepared for or during mediation is admissible or discoverable. All communications and settlement discussions between participants stay confidential.6California Legislative Information. California Evidence Code 1119 – Mediation Confidentiality

The practical effect matters. You can make a settlement offer, acknowledge a weakness, or float a creative proposal without worrying it will resurface in court if the mediation fails. Note the “noncriminal” qualifier: statements made in mediation could potentially be used in a criminal proceeding.

The mediator’s own communications are separately restricted. Under Section 1121, a mediator cannot submit any report, evaluation, or recommendation to the court about the substance of the mediation. If a court rule requires anything, it is limited to whether the parties reached an agreement.7California Legislative Information. California Evidence Code 1121 – Mediator Reports A judge will not learn from the mediator which side was unreasonable or what offers were made.

Exceptions To Know

The protections are broad, not absolute. Section 1120 is the most important carve-out: evidence that was already admissible before the mediation does not become protected just because someone brought it up during the session.8California Legislative Information. California Evidence Code 1120 – Evidence Not Excluded A contract, a photograph, or a financial record that would be admissible on its own is not shielded by being used in mediation. The statute also does not prevent disclosure of the simple fact that a mediator was retained or served, and financial disclosures required under Family Code Sections 2104 and 2105 remain admissible even if prepared during mediation.

Under Section 1122, mediation communications can be disclosed if all participants expressly agree in writing or on the record before the mediator.9California Legislative Information. California Evidence Code 1122 – Disclosure Conditions A narrow exception also exists for attorney disciplinary proceedings involving compliance with the Section 1129 disclosure obligations, provided the disclosure does not reveal what was actually said or admitted during the mediation.

Making a Settlement Enforceable

Reaching a deal at the table is only half the job. For a written settlement prepared during mediation to be enforceable, Evidence Code Section 1123 requires the signed agreement to meet at least one of these conditions:

  • It states that it is enforceable, binding, or words to that effect.
  • It states that it is admissible or subject to disclosure.
  • All parties expressly agree in writing or orally on the record to its disclosure.
  • It is used to show fraud, duress, or illegality relevant to a disputed issue.

Section 1123 is the source of these requirements.10California Legislative Information. California Evidence Code 1123 – Written Settlement Agreement Admissibility If the written agreement does not contain enforceability or admissibility language, it stays protected by confidentiality, which means you cannot bring it to court to enforce it. A properly drafted mediated settlement should include a clear statement that it is binding and enforceable, and it should be signed by all parties before anyone leaves the room.

Oral agreements are treated separately under Section 1124. An oral agreement made during mediation can be admissible, but only if it was recorded and meets the procedural requirements of Section 1118, generally meaning it was made before the mediator and on the record.11California Legislative Information. California Evidence Code 1124 – Oral Agreement Admissibility Relying on an oral agreement is risky. The safer practice is to reduce any deal to a signed writing before the session ends, even a short-form memorandum with a fuller agreement to follow.

Taxes on a Mediated Settlement

A settlement that involves payment of money raises federal tax questions that many parties overlook until it is too late to structure the deal well. Under 26 U.S.C. § 104, damages received on account of personal physical injuries or physical sickness are excluded from gross income.12Office of the Law Revision Counsel. 26 USC 104 – Compensation for Injuries or Sickness Emotional distress alone does not qualify as a physical injury for this exclusion, though medical expenses attributable to emotional distress can be excluded up to the amount actually paid for that care.

Settlements for non-physical claims such as employment discrimination, breach of contract, or defamation are generally taxable as ordinary income. How the agreement allocates the payment matters. The IRS will typically respect an allocation in the agreement if it is consistent with the nature of the underlying claims.13Internal Revenue Service. Settlements – Taxability (Publication 4345) The mediation itself is the moment to negotiate the tax allocation, not after checks have been cut. In cases mixing physical and non-physical claims, a careful allocation between taxable and non-taxable components can save thousands of dollars.

If Mediation Fails

Not every mediation ends in a deal. When a mediator declares impasse, the case returns to whatever track it was on. In family law, the court hears the contested custody or visitation issues and a judge decides what the parents could not. In civil cases, the parties continue through discovery, motions, and eventually trial or further settlement talks.

Courts sometimes order a mandatory settlement conference later in the case, which functions differently from mediation because the settlement conference judge may express opinions about the merits. Parties can also return to mediation voluntarily at any point before final judgment. A case that seemed impossible to settle early can become ripe for resolution once discovery reveals new facts or trial costs come into focus. And the Section 1119 protections mean nothing from the failed mediation follows the case into the courtroom. Neither side can tell the judge what the other offered or admitted.6California Legislative Information. California Evidence Code 1119 – Mediation Confidentiality