Mediator’s Proposal Examined as an Endgame Tool in Complex Litigation

A recent article in the American Arbitration Association’s Mediation Magazine examines the mediator’s proposal as an end-stage settlement tool in complex litigation and considers how to use it without displacing the parties’ control over settlement decisions.

Written by full-time neutrals Gene M. Witkin and Matthew W. Argue, the article places the mediator’s proposal within a broader mediation process that begins well before the parties enter the mediation room. Effective preparation, the authors emphasise, includes identifying the necessary decision-makers, ensuring adequate information exchange, and addressing insurance and other settlement-related issues in advance. An absent insurer or other essential participant can otherwise become a significant obstacle when negotiations reach a critical stage.

During the mediation itself, the authors discuss using breakout sessions, joint sessions, and, where appropriate, meetings between experts to identify what is preventing resolution and narrow the distance between the parties. The mediator’s proposal enters the process only at the endgame—after conventional mediation techniques have been fully explored and no other means can bridge the remaining settlement gap.

The article cautions against moving prematurely to a mediator’s proposal. It should not be used where a party is not meaningfully participating or where further information, investigation or legal research is required. The authors also suggest that a mediator should generally make such a proposal only where both parties request it.

A mediator’s proposal is typically made on a “double-blind” basis: each party communicates its response confidentially to the mediator, and if one party rejects the proposal, that party does not learn whether the other side accepted it. This is intended to prevent either side from gaining a negotiating advantage from an unsuccessful proposal. The authors also favour, subject to exceptions, a written proposal delivered after the mediation, accompanied by sufficient reasoning to enable the parties—and, where relevant, insurers and other decision-makers—to understand and assess it.

The article also examines the mediator’s proposal in light of ABA Formal Opinion 518, issued on 15 October 2025, concerning the ethical responsibilities of lawyer-mediators. The Opinion permits a lawyer-mediator to express a view about how a tribunal may resolve a legal or factual issue, but cautions against stating or implying that a particular settlement is in a party’s best interest on that basis. It also prohibits a mediator from making an untrue statement about matters such as an opposing party’s “best offer.”

For mediation practice, this distinction matters. A mediator’s proposal may help parties confront a final settlement gap, but it should not become a substitute for the parties’ own evaluation of whether to settle or for counsel’s responsibility to advise their clients. Properly used, the proposal remains an aid to decision-making rather than a decision made by the mediator.

The article therefore presents the mediator’s proposal not as a routine step in mediation, but as a carefully timed endgame intervention—used after other avenues have been exhausted, with party consent, and without compromising party self-determination.