Does Filing a Malpractice Claim Waive Mediation Privilege?

Procedural posture and result

Special-action review of a superior court ruling that treated Arizona’s mediation-process privilege as waived in a legal-malpractice action. The Arizona Court of Appeals accepted jurisdiction, held that the privilege had not been waived, vacated the contrary ruling, and directed the superior court to identify and exclude claims or evidence dependent on privileged mediation communications.

What happened and what the authority decided

A former client brought a legal-malpractice action against her former attorneys based in part on advice allegedly given in connection with a family-court mediation and the resulting divorce settlement.

The attorneys sought to use communications involving the client, counsel, and mediator in defending against the malpractice allegations. They argued that by placing the quality of the legal advice at issue, the client had effectively waived mediation confidentiality.

The superior court agreed in part and ruled that the mediation privilege had been waived as to certain communications. The client sought special-action review.

The Arizona Court of Appeals held that communications made as part of the mediation process were protected by A.R.S. § 12-2238(B) and that filing the malpractice action did not create an implied waiver. The statutory language specified the circumstances in which confidential mediation material could be disclosed and, as interpreted by the court, left no room for an additional implied-waiver exception.

The court also emphasized that the privilege protected interests beyond those of the malpractice plaintiff. Her former husband, who participated in the mediation but was not a party to the malpractice litigation, also had confidentiality interests that had to be protected.

Rather than opening the mediation record, the court directed the superior court to determine which communications, materials, and acts were privileged and to strike from the complaint and litigation allegations or evidence dependent on those privileged communications.

What this tells the mediator

A later malpractice suit or other dispute does not automatically make mediation communications discoverable. Mediators should continue treating protected mediation communications as confidential unless disclosure is authorized by the governing statute, valid consent, or an applicable court ruling.

Practical guidance

• Explain that Arizona’s mediation privilege belongs to more than the mediator alone.
• Do not assume that a lawsuit or subpoena automatically waives confidentiality.
• Notify affected participants before responding to a disclosure demand when permitted.
• Preserve objections and seek a protective order if disclosure is contested.
• Disclose only the minimum information expressly authorized by law or court order.