Rule 3.871.Confidentiality of complaint proceedings, information, and records
Division 8. Alternative Dispute Resolution · Chapter 3. General Rules Relating to Mediation of Civil Cases · Article 3. Requirements for Addressing Complaints About Court-Program Mediators · Last amended 2010 · Last verified July 29, 2026
Full Text of Rule 3.871
Plain-English Summary
Rule 3.871 explains why the complaint process is confidential and then locks that confidentiality in. The stated goals are threefold: keep mediation communications protected the way the Evidence Code already requires, encourage people to report and investigate complaints without fear of exposing what was said in mediation, and keep mediators from being publicly tied to complaints that turn out to be groundless.
To carry that out, the rule keeps the whole complaint proceeding private, including the private side conversations — caucuses — a mediator might have with one side or a subgroup of participants. Nothing about the receipt, investigation, or resolution of a complaint goes public, and nothing is shared outside the proceeding itself, apart from two narrow openings.
After a decision is made, the presiding judge (or someone the judge designates) can authorize release of information that does not reveal what was said in mediation — things like the mediator’s name, what action the court took, and the general reason for it. Separately, if disclosure turns out to be required by law, such as a subpoena, the court should weigh the same confidentiality goals first, and anyone whose mediation communications might be exposed is entitled to notice before that happens.
Advisory Committee Comment
The following comment is published by the Judicial Council of California alongside the rule itself — not commentary from this site.
Under rule 3.866(9), the complaint proceedings covered by this rule include proceedings to address inquiries as well as complaints (i.e., to unwritten as well as written communications indicating that a mediator may have violated a provision of the rules of conduct). Subdivision (a). See Evidence Code sections 1115 and 1119 concerning the scope and types of mediation communications protected by mediation confidentiality. Rule 3.871 is intended to supplement the confidentiality of mediation communications established by the Evidence Code by ensuring that disclosure of information or records about a complaint proceeding does not reveal confidential mediation communications. Rule 3.871 is not intended to supersede or abrogate the confidentiality of mediation communications established by the Evidence Code. Subdivision (b). Private meetings, or “caucuses,” between a mediator and subgroups of participants are common in court-connected mediations, and it is frequently understood that these communications will not be disclosed to other participants in the mediation. (See Cal. Rules of Court, rule 3.854(c).) It is important to protect the confidentiality of these communications in complaint proceedings so that one participant in the mediation does not learn what another participant discussed in confidence with the mediator without the consent of the participants in the caucus communication. Subdivisions (c)–(e). The provisions of (c)–(e) that authorize the disclosure of information and records related to complaint proceedings do not create any new exceptions to mediation confidentiality. Although public disclosure of information and records about complaint proceedings that do not reveal mediation communications may be authorized under (d), information and records that would reveal mediation communications may be publicly disclosed only as required by law (e.g., in response to a subpoena or court order) and consistent with the statutes and case law governing mediation confidentiality. A person who is knowledgeable about California’s mediation confidentiality laws should determine whether the disclosure of mediation communications is required by law. Evidence Code sections 915 and 1040 establish procedures and criteria for deciding whether information acquired in confidence by a public employee in the course of his or her duty is subject to disclosure. These sections may be applicable or helpful in determining whether the disclosure of information or records acquired by judicial officers, court staff, and other persons in the course of a complaint proceeding is required by law or should be authorized in the discretion of the presiding judge.
Frequently Asked Questions
Are mediator complaint proceedings open to the public?
No. Rule 3.871 keeps the whole complaint process private and confidential, with only narrow exceptions.
Can the outcome of a mediator complaint ever be made public?
Yes, but only after a decision, and only information that does not reveal mediation communications — for example the mediator’s name, the action taken, and the general basis for it.
What if the law requires disclosing information from a complaint proceeding?
The court must still weigh the confidentiality goals behind rule 3.871, and anyone whose mediation communications might be revealed is entitled to notice before disclosure.
Why does the rule single out private caucus conversations?
Because a mediator often hears things privately from one side that were never meant to reach the other, and the rule protects those communications the same way it protects the rest of the mediation.
Amendment History
Rule 3.871 amended and renumbered effective July 1, 2009, effective date extended to January 1, 2010; adopted as rule 1622.2 effective January 1, 2006; previously amended and renumbered as rule 3.867 effective January 1, 2007.