Mandatory Mediation & ADR in Greece 2026: What Businesses Must Know Before Suing

The landscape of mediation in Greece has shifted decisively since the enactment of Law 4640/2019, which introduced a mandatory initial mediation session for a wide range of civil and commercial disputes. Successive waves of Greek civil procedure amendments through 2025 and 2026 have reinforced that obligation, while the adoption of EU Directive 2025/2647 on alternative dispute resolution is now pushing member states, Greece included, to expand ADR and online dispute resolution (ODR) infrastructure for cross-border matters. For general counsel, in-house legal teams, commercial landlords and tenants, and any business contemplating litigation in Greece, the practical question is no longer whether ADR is relevant but rather how quickly you must comply.

This guide sets out the current obligations, procedural triggers, enforcement pathways, and the contract clauses and checklists every business needs in place before filing suit.

Is Mediation Mandatory in Greece? Law 4640/2019 and the Mandatory Initial Mediation Session Explained

For most commercial disputes heard before Greek first-instance courts, the short answer is yes, at least in part. Law 4640/2019 introduced a requirement that parties participate in a mandatory initial mediation session (ypochreotiki archiki synedria diamesolavisis) before proceeding with litigation. This obligation applies broadly to civil and commercial cases, including disputes over contracts, commercial leases, professional liability, and certain property matters.

The obligation is not a requirement to settle through mediation. Rather, it mandates that the parties, together with their legal counsel, attend an introductory session conducted by an accredited mediator. The mediator explains the mediation process, explores whether the parties are willing to continue to a full mediation, and issues a written record confirming attendance. Only after this session has been completed (or a valid exemption applies) may the claimant file suit and have the case proceed in court.

What Counts as an “Initial Mediation Session”?

The mandatory initial mediation session under Law 4640/2019 is a structured, time-limited meeting, not a full mediation. The key practical steps are:

• Mediator selection. The initiating party selects an accredited mediator from the official registry maintained by the Greek Ministry of Justice.
• Notice. The mediator contacts all parties, confirms a date, and sends a written invitation.
• Attendance. Both parties must attend in person or through a duly authorised representative, accompanied by their legal counsel. Attendance by lawyers alone, without the party or an authorised representative, is generally insufficient.
• Session content. The mediator explains the process, canvasses the dispute in general terms, and invites the parties to proceed to full mediation. The session is confidential.
• Written record. At the conclusion, the mediator issues a minutes document (praktiko) recording attendance and whether the parties agreed to continue. This document must be filed with the court alongside the statement of claim.

Exceptions and Limits

Mandatory mediation in Greece does not apply to every dispute. Key exceptions include cases involving interim relief or injunctions, enforcement proceedings, disputes before specialised tribunals where the law requires a judicial decision by statute, and matters involving public policy or non-waivable rights. Certain family-law and labour disputes follow separate mediation frameworks. In practice, counsel must assess on a case-by-case basis whether the specific dispute category falls within the scope of Law 4640/2019.

How Greek Reforms (2025–26) and EU Directive 2025/2647 Change Pre-Action ADR in Greece

The mandatory initial session under Law 4640/2019 was a first step. The 2025–2026 wave of Greek civil procedure amendments has significantly expanded the procedural integration of mediation and ADR in Greece, while the EU ADR Directive adds a cross-border compliance layer that no internationally active business can afford to ignore.

What Businesses Must Change Now

The combined effect of these reforms means that businesses operating in or contracting under Greek law should take several immediate steps:

• Review all dispute resolution clauses. Contracts signed before 2020 are unlikely to reference mandatory mediation in Greece or the new EU ADR obligations. Any clause that provides only for court litigation should be updated.
• Update consumer-facing processes. Businesses selling goods or services online to EU consumers must ensure their platforms and terms of service reference available ADR and ODR mechanisms, consistent with EU Directive 2025/2647.
• Establish internal dispute resolution policies. Industry observers expect Greek courts to look increasingly favourably on parties that demonstrate a genuine commitment to ADR before resorting to litigation. Documented internal policies, covering escalation, mediation readiness, and settlement authority, will carry weight.
• Train in-house teams. Legal and commercial teams need to understand the procedural calendar, confidentiality obligations, and cost implications of the mandatory initial session and any subsequent court-ordered mediation.

EU Directive 2025/2647 requires member states to ensure that certified ADR entities are available and accessible for both domestic and cross-border disputes, and that online dispute resolution platforms are operational for consumer claims. While Greece is in the process of transposing these requirements, the likely practical effect will be a more structured, regulated ADR environment with higher expectations for business participation.

When Courts Can Order Mediation in Greece, Procedural Triggers and Court Practice Notes

Beyond the mandatory initial session, Greek courts have discretionary power to refer disputes to mediation at any stage of proceedings. The 2025–26 procedural amendments have reinforced this power, and early indications suggest that judges are exercising it more frequently. Understanding when and how court-ordered mediation in Greece operates is essential for litigation planning.

Timeline: How Long Does the Process Take?

The mandatory initial mediation session itself is typically completed within a single meeting, often lasting one to three hours. The statutory framework provides for a pause in limitation periods while pre-action mediation is underway, so businesses need not fear losing the right to sue during the process. From appointment of the mediator to issuance of the minutes, the standard timeline is approximately two to four weeks, though this varies by mediator availability and party cooperation.

Sanctions and Implications for Not Attending

Refusing to attend a mandatory initial session or ignoring a court referral to mediation carries real consequences. Courts may impose adverse cost orders on a party that fails to attend without justification, and industry observers expect these sanctions to become more severe under the 2025–26 reforms. In practical terms, a party’s refusal may also colour the court’s perception of good faith, which can influence both procedural rulings and the ultimate allocation of legal costs.

Practical Compliance Checklist for Businesses Facing Mediation in Greece

Whether mediation is triggered by Law 4640/2019, by a court order, or by a contractual clause, businesses need a clear compliance plan. The following checklist is designed for general counsel and in-house legal teams preparing for commercial mediation in Greece.

Step 1, Contractual Clause Review (Weeks 1–2)

• Audit all active contracts governed by Greek law for existing mediation or ADR clauses.
• Identify contracts with no dispute resolution mechanism or with clauses referencing only court litigation.
• Flag consumer-facing contracts and online terms of service that may require ODR references under EU Directive 2025/2647.
• Prepare a priority list for clause updates, starting with high-value or high-risk agreements.

Step 2, Evidence and Witness Preparation (Weeks 2–3)

• Assemble core documents: the contract, relevant correspondence, invoices, and any prior without-prejudice communications.
• Identify witnesses or corporate representatives who can attend and who have authority to settle.
• Prepare a concise mediation brief (5–10 pages) summarising the dispute, your position, and your settlement parameters.
• Note: all communications during the mediation session are confidential and inadmissible in subsequent court proceedings.

Step 3, Timing and Calendar Management (Ongoing)

• Check applicable limitation periods and confirm that the statutory pause applies while pre-action mediation in Greece is underway.
• Diarise the mediator appointment deadline, the initial session must be scheduled and completed before filing suit in covered disputes.
• Build a buffer of at least four weeks between the decision to litigate and the intended filing date to allow for the initial session.

Step 4, Counsel Roles and Attendance Requirements

• Ensure that both the party (or an authorised representative with settlement authority) and legal counsel attend the session.
• Confirm counsel’s familiarity with the mediation process and any specific procedural rules issued by the chosen mediator or mediation centre.

Step 5, Costs and Cost Recovery

• Mediator fees for the initial session are typically shared equally unless the parties agree otherwise.
• Budget for mediator costs, venue, and counsel time, these are generally modest compared to full litigation.
• Be aware that a court may take a party’s refusal to mediate into account when allocating litigation costs at trial.

Step 6, ODR Readiness

• If your business sells to consumers online within the EU, confirm that your website links to the relevant ODR platform and that your terms of service reference available ADR mechanisms.
• Review data protection compliance for any personal data exchanged during ODR or mediation processes.

Drafting Enforceable Mediation and ODR Clauses Under Greek Law

A well-drafted mediation clause in Greece saves time, reduces litigation risk, and ensures compliance with Law 4640/2019 and EU Directive 2025/2647. Below are two model clauses, one for commercial contracts and one for cross-border consumer/business agreements, together with key drafting notes.

Model Commercial Mediation Clause

“Any dispute arising out of or in connection with this contract, including any question regarding its existence, validity, or termination, shall first be referred to mediation in accordance with Greek Law 4640/2019 and the rules of [named mediation institution/centre]. The mediation shall take place in [Athens/Thessaloniki/agreed city], in the [Greek/English] language. If the dispute is not resolved within [60] days of the appointment of the mediator, either party may commence court proceedings before the competent Greek courts.”

Model ODR Clause (Cross-Border Consumer/Business)

“For disputes arising from online transactions, consumers may submit a complaint through the European Commission’s Online Dispute Resolution platform. The parties agree to participate in any ADR procedure initiated through an accredited ADR entity, in accordance with EU Directive 2025/2647 and applicable Greek law.”

Common Clause Pitfalls to Avoid

• Vague language. Avoid clauses that merely “encourage” mediation without specifying the process, timeline, or institution. Courts may treat such clauses as non-binding.
• Missing confidentiality provisions. If your contract does not expressly state that mediation communications are confidential, disputes may arise over admissibility of settlement discussions in later proceedings.
• No fallback to litigation. Always include a clear escalation mechanism, mediation first, then court proceedings, with defined time limits.
• Ignoring language and venue. In cross-border contracts, failure to specify the mediation language and seat can cause procedural delays and jurisdictional disputes.
• Overlooking ODR obligations. Businesses selling online to EU consumers that fail to reference the ODR platform in their terms of service risk regulatory scrutiny and may face consumer protection enforcement actions.

Mediated Settlement Agreements, Enforcement and Cross-Border Recognition

One of the most important advantages of mediation in Greece is that a mediated settlement agreement can become a directly enforceable title. Under Greek law, when the parties reach a settlement through mediation, the agreement is signed by the parties, their lawyers, and the mediator. It can then be submitted to the competent Single-Member First Instance Court for deposit, after which it becomes an enforceable title equivalent to a court judgment for execution purposes.

For cross-border enforcement, mediated settlement agreements deposited in Greece and rendered enforceable can circulate within the EU under applicable instruments. Industry observers expect the transposition of EU Directive 2025/2647 to further streamline cross-border recognition of ADR outcomes, reducing the procedural friction that has historically made parties reluctant to choose mediation for international disputes.

Online Dispute Resolution (ODR), Platforms, Cross-Border Consumer Claims and Timeline

Online dispute resolution in Greece is gaining institutional support, driven both by domestic reforms and EU-level mandates. EU Directive 2025/2647 requires member states to ensure that certified ODR platforms are available for consumer disputes arising from online transactions, and that these platforms connect to accredited ADR entities.

For businesses, the immediate operational steps are straightforward:

• Link to the ODR platform. Any business selling goods or services online to EU consumers must include a visible link to the European Commission’s ODR platform on its website and in its general terms and conditions.
• Designate a contact point. Businesses should identify an internal contact responsible for managing ODR complaints and communicating with the relevant ADR entity.
• Ensure GDPR compliance. Personal data exchanged through ODR platforms must be processed in accordance with the General Data Protection Regulation. Review your data processing agreements and privacy notices to confirm coverage.
• Monitor transposition. Greece is in the process of transposing EU Directive 2025/2647 into national law. Businesses should monitor Greek Ministry of Justice announcements for implementing legislation and any new procedural requirements specific to online dispute resolution in Greece.

Conclusion, Mediation in Greece Demands Action Now

The convergence of Law 4640/2019, the 2025–26 Greek procedural reforms, and EU Directive 2025/2647 has made mediation in Greece a compliance imperative rather than a strategic option. Businesses with active or contemplated disputes in Greece should audit their contracts, prepare for mandatory initial sessions, and build ADR readiness into their legal operations. For guidance on navigating these obligations, find a qualified Greek dispute resolution lawyer through our directory.

Sources

1. Greek Law 4640/2019, Official Government Gazette (FEK)
2. European e‑Justice Portal, Mediation in EU Countries (Greece)
3. EU Directive 2025/2647 (ADR Directive), EUR‑Lex
4. Wolters Kluwer Mediation Blog, Greece: Institutionalizing Mediation
5. European Commission, ODR Platform
6. Lambadarios Law Firm, Mandatory Mediation in Greece Is a Fact
7. PolitisPartners Newsletter, Mandatory Mediation (December 2019)
8. European Commission / e‑Justice Portal
9. Greek Mediation Institute (GMI)