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Rule 88.05.Mediation--Qualifications of the Mediator.

Part III · Rule 88: Domestic Relations and Paternity Cases — Calculation of Child Support — Mediation — Self-Represented Litigants · Last amended July 1, 2022 · Last verified July 22, 2026

In one sentenceRule 88.05 sets the minimum qualifications for a mediator in domestic relations and paternity cases, requiring an affidavit showing professional background, at least 20 hours of approved child custody mediation training covering violence and power imbalance, and lists what courts consider before appointing one.

Full Text of Rule 88.05

Text sizeJump to: (a) (b) (c)

(a) A mediator who performs mediation in domestic relations and paternity cases pursuant to this Rule 88 shall be a person who has stated by affidavit that he or she:
(1) Is an attorney or a person who possesses a graduate degree in a field that includes the study of psychiatry, psychology, social work, counseling, or other behavioral science substantially related to marriage and family interpersonal relationships;
(2) Has received a minimum of 20 hours of child custody mediation training in a program approved by the court that shall include a component of training covering violence and power imbalance issues; and
(3) Any additional qualifications required by local court rule.
(b) Mediators qualified for appointment under this Rule may file proof of their qualifications with the circuit clerk of a county, who shall maintain a master list for the county of qualified mediators available for appointment. A circuit clerk's master list is not exhaustive of qualified mediators and does not prevent the appointment by the court of other qualified mediators under this Rule. Bar organizations may also maintain lists of qualified mediators.
(c) In appointing a qualified mediator, the court shall consider:
(1) The nature and extent of any relationship the mediator may have with the parties and any personal, financial, or other interests the mediator may have that could result in bias or conflict of interest; and
(2) The mediator's knowledge of: (A) the Missouri judicial system and the procedures used in domestic relations cases, (B) other resources in the community to which parties can be referred for assistance, (C) child development, (D) clinical issues relating to children, (E) the effects of the dissolution of marriage on children, (F) family systems theory, and (G) mediation and conflict resolution.

Amendment History

Adopted Dec. 27, 1990, eff. July 1, 1991; Amended June 29, 1993, eff. July 1, 1994; Amended Dec. 21, 2021, eff. July 1, 2022.

Plain-English Summary

Rule 88.05 sets the floor for who can serve as a mediator under Rule 88. A prospective mediator must state by affidavit that they are either an attorney or a person holding a graduate degree in a field such as psychiatry, psychology, social work, counseling, or another behavioral science substantially related to marriage and family interpersonal relationships.

Beyond that background requirement, the mediator must have completed at least 20 hours of child custody mediation training in a court-approved program. That training must include a component on violence and power imbalance issues, recognizing that family disputes can involve safety concerns a mediator needs to be equipped to handle. Local court rules may add further qualifications on top of these minimums.

The rule also creates a way for circuit clerks to track qualified mediators. Mediators who meet these qualifications may file proof of them with the circuit clerk of a county, who maintains a master list of qualified mediators available for appointment there. That list is not exhaustive — it does not prevent a court from appointing another qualified mediator who is not on it — and bar organizations may keep their own separate lists as well.

Finally, the rule tells courts what to weigh when appointing a mediator in a specific case. Courts consider the nature and extent of any relationship the mediator has with the parties and any interest that could create bias or a conflict of interest. Courts also weigh the mediator’s knowledge across several areas: the Missouri judicial system and domestic relations procedures, other community resources available to the parties, child development, clinical issues affecting children, the effects of dissolution of marriage on children, family systems theory, and mediation and conflict resolution itself.

Frequently Asked Questions

What background must a mediator have under this rule?

The mediator must be an attorney, or hold a graduate degree in a field like psychiatry, psychology, social work, counseling, or another behavioral science related to marriage and family relationships.

How much training does a mediator need?

A minimum of 20 hours of child custody mediation training in a court-approved program, including training on violence and power imbalance issues.

Can local courts require more than the rule's minimums?

Yes. The rule allows any additional qualifications required by local court rule.

What is the circuit clerk's master list of mediators?

A list a circuit clerk maintains of mediators who have filed proof of their qualifications with that county, available for appointment there.

Does the master list limit who a court can appoint?

No. The rule states the master list is not exhaustive and does not prevent the court from appointing other qualified mediators not on it.

What factors does a court weigh before appointing a mediator?

The nature of any relationship or interest that could create bias or conflict, and the mediator's knowledge of Missouri court procedures, community resources, child development, clinical issues, the effects of dissolution on children, family systems theory, and conflict resolution.

Source & verification. Rule text and amendment history are reproduced verbatim from the Missouri State & Federal Court Rules, adopted by the Supreme Court of Missouri. Last verified July 22, 2026. · Official source
Also known as: mediator qualifications Missourichild custody mediation trainingcircuit clerk mediator listmediator affidavit requirementsfamily mediator background