One Year Later

A common objection to mediation is the lingering doubt as to whether a fair and lasting solution can be achieved. Does the process culminate in an unattractive commercial trade-off or a hollow compromise that leaves one side's interests fundamentally neglected? Is the conflict genuinely resolved, or is mediation merely a deferral of an inevitable court case, a detour on the road to litigation?

These questions are entirely valid, and the underlying concerns cannot be simply dismissed. It is true that the outcome of a mediation is often more of a "black box" than in court or arbitration. The very flexibility in process and range of solutions that makes mediation so attractive also makes its trajectory less predictable.

In previous articles, I have cited the CEDR Mediation Audit: an 87% settlement rate in the UK, with 70% reached on the same day. These figures are only meaningful if the parties remain satisfied with the outcome over the long term. The decisive question is therefore not whether an agreement is reached, but whether it stands the test of time.

This article is not intended as a defence of mediation against these valid concerns. Instead, I want to provide a framework for evaluation based on empirical studies and practical considerations: what does it take for a mediation agreement to be robust in practice?

Settlement Regret or Sustainable Resolution?

Study from Germany – Focus on Long-Term Satisfaction

A study from Germany published in 2022 (Kaiser, P., Eisenkopf, G., Gabler, A. M. & Lehmann, F. L., (2022) “Qualities and Long-Term Effects of Mediation”, Negotiation and Conflict Management Research 16(2), 132-164.) specifically addressed this issue. Researchers examined 303 conflict cases (civil litigation, neighbourhood disputes, and family matters) with a value in dispute of up to €50,000. These cases were pending before the District and Regional Courts in Kiel, where mediation was suggested to the parties and court proceedings were stayed for that purpose. Parties, their legal counsel, and mediators were surveyed between 2009 and 2011 at three points in time: (i) before the start of mediation, (ii) upon completion, and (iii) one year after the conclusion of the proceedings.

The results:

• 92% of the cases were brought to a conclusion within the first session (with or without settlement), with the session lasting three hours or less in 91.7% of cases.
• A settlement was reached in 85% of the cases.
• One year later, 70% of parties confirmed cost savings (due to, for example, avoiding enforcement proceedings), and 73.2% reported time savings (as no further lawyer or court involvement was required).
• In 75% of cases, the mediation agreement was upheld by all parties; in 21.8%, judicial enforcement was required.
• 52.7% rated the agreed outcome as fair.
• 58.8% were satisfied with the result immediately following the mediation; this figure rose to 64.4% when the parties were re-surveyed after one year.
• 84% of parties would opt for mediation again in a similar conflict.

In summary, the study shows that mediation produces resilient results when viewed through a long-term lens. The majority of agreements held up without judicial enforcement, time and cost savings are the norm, and satisfaction with the outcome even increases over time. It is notable, however, that only just over half of the participants perceived the result as fair, while 84% would use the process again in a similar situation. Settlement regret is therefore not a widespread phenomenon, but neither is it negligible.

When interpreting these results, it should be taken into account that the response rate for the one-year follow-up survey was lower than for the first two waves, which may bias the long-term satisfaction figures in either direction. The transferability of the findings to complex commercial mediations involving higher amounts in dispute and multiple stakeholders is also limited, as the study examined court-annexed mediations with comparatively lower dispute values.

Study from Singapore – Focus on Commercial Mediation

A second data source complements this perspective: the SIDRA International Dispute Resolution Survey 2024 (Singapore Management University). The survey examines commercial disputes in an international context and compares user experiences across arbitration, mediation, and litigation. Now in its third edition, it is based on 211 respondents (lawyers, executives, and in-house counsel) from 26 countries, covering both civil law and common law jurisdictions.

The findings regarding mediation:

• 75% of respondents were satisfied with the costs of mediation, 83% with the duration of the proceedings, and 83% with confidentiality.
• 75% expressed satisfaction with procedural flexibility, 71% with the preservation of business relationships, and 71% with the finality of the outcome.
• When evaluating the mediator, 83% were satisfied with the costs, 88% with efficiency, and 88% with the mediator's dispute resolution experience.

While the German study examines outcomes one year after the proceedings and assesses their durability, SIDRA captures immediate user satisfaction with the process itself. From a methodological perspective, SIDRA is based on a voluntary industry survey, with the Asian region, particularly Singapore, being strongly represented in the sample. The two studies complement each other: the German study shows that mediation settlements generally hold and that satisfaction with the outcome tends to increase over time. SIDRA shows that, even in an international commercial context, users are broadly satisfied with mediation across the key parameters – cost, duration, and confidentiality.

What Makes a Mediation Agreement Sustainable?

Several factors contribute to a successful mediation, many of which I have discussed previously: preparation, a clear role allocation, and the competence of the mediator. One element deserves particular attention in this context: the drafting and implementation of the mediation agreement (see also here).

Signing the agreement is rarely sufficient to resolve the conflict. The parties may have reached an accord, but the decisive step is to translate the new-found consensus and fragile peace into action. The mediation agreement is therefore not the finish line, but the first milestone.

• Testing for workability and acceptance: It is essential to involve relevant stakeholders and departments (management, sales, operations, legal) already during the negotiation of the mediation agreement, both to test the agreement against operational reality (i.e. budget cycles, quarterly targets), practical viability and to verify that the key stakeholders are able and willing to support it (see here and here).
• Securing approvals upfront: This also includes obtaining all necessary internal and external approvals: A CFO who blocks after the agreement, a bank that withholds consent, a supervisory board that has the final say. If these decision-making realities only surface after the mediation agreement is negotiated, this might raise issues and stall implementation.
• Parameters for implementation: Implementation should be discussed explicitly – internally and with the negotiating partner – by allocating responsibilities, setting a timeline, defining benchmarks to verify performance, and agreeing on mechanisms to intervene or recalibrate where necessary. 
• Translation into the drafting: This also needs to be reflected in the wording of the mediation agreement. The point is often less about elegant contract language and more about a concrete, workable roadmap. Vague phrasing, unclear timelines, or commitments that are operationally unfeasible can quickly cause the implementation of the mediation agreement to derail.

An agreement that quietly dissolves is not a success. The true measure of mediation is not the point of signing, but whether what was agreed actually holds.

Conclusion

The available data suggest that mediation has the potential to produce outcomes that are both satisfactory for the parties and capable of holding over time. Whether that potential is realised in any given case cannot be answered in the abstract. What can be said is that parties and their advisers have a number of levers at their disposal – from thorough preparation and risk analysis through to a practical implementation plan – to shape the conditions for such an outcome.