Spain Introduces Mandatory Pre-Action ADR for Most Civil and Commercial Claims

Spain Introduces Mandatory Pre-Action ADR for Most Civil and Commercial Claims

Since April 4^th 2025, Spain joined the growing list of EU jurisdictions (including France, Italy, Belgium, amongst others) that require a genuine attempt at out-of-court resolution before filing most types of civil and commercial lawsuits.

The new regime, introduced by Organic Law 1/2025, of January 2nd (the “Procedural Efficiency Law”) represents one of the attempts in Europe to unclog the courts and promote alternative dispute resolution (ADR).

1. Which claims are affected?

The obligation applies to almost all monetary and compensatory claims that fall within the civil and commercial jurisdictions, including the most common ones:

– Unpaid rent and residential/commercial eviction proceedings (except urgent measures)

– Debt recovery and overdue invoice claims

– Contractual breach and indemnity claims

– Non-contractual (tort) liability, including personal injury and property damage

– Construction defects and professional liability

– Consumer claims (unless brought through the official consumer arbitration system)

– Most actions derived from commercial contracts, such as share purchase agreements (SPAs), distribution, agency, supply and service contracts

2. What is NOT subject to mandatory ADR?

The law expressly excludes proceedings where the parties have no real power of disposition or where public interest prevails:

– Labour law disputes (individual and collective, subject to their own conciliation system)

– Family law (filiation, custody, maintenance)

– Insolvency and bankruptcy

– Administrative law (where litigation involves a public authority)

– Criminal proceedings

– Arbitration clauses (if the parties have already agreed to arbitrate)

– Certain urgent interim measures (e.g. freezing orders)

– Enforcement claims

– European collection claims (EU Regulation 1896/2006 or EU Regulation 861/2007)

– Claims below €2,000 (optional exemption in some cases)

3. Which ADR methods are acceptable?

The plaintiff has complete freedom to choose the method, provided it is properly documented:

✅ Mediation

✅ Conciliation

✅ Expert’s opinion

✅ Confidential binding offer

✅ Or mere interparty negotiations

The process is terminated without agreement in the following cases:

• The lapsing of 30 calendar days, counted from the date of receipt of the request, without holding the first meeting or contact or without obtaining a written response.
• When, once the negotiating activity has begun, 30 days have elapsed since the date of a specific proposal for an agreement without a written response being reached or obtained.
• The lapsing of 3 months from the date of the first meeting without the agreement having been reached. The term may be extended by mutual agreement of the parties.
• If any of the parties writes to end the negotiations, leaving a record of this.

4. How to formalise the agreements resulting from ADRs?

The ADR attempt must be evidenced by written minutes, e-mails or a notarial certificate.

The agreement that puts an end to the negotiating activity must be formalized in a document, to be signed by the parties, which states all the details of the participants, date and place and obligations assumed, and may be made in a public deed.

Its content may relate to part or all of the matters subject to negotiation and is binding on the parties.

The parties may compel each other to formalize the agreement reached in a public deed. If the requested party does not comply with the request from the other, it may be granted unilaterally by the applicant, and the request must be made through the notary authorizing the public instrument.

Confidentiality of the content is strictly protected; only the fact of the attempt and the method used must be disclosed to the court.

Intervening third parties such as mediators and conciliators are bound by professional secrecy.

5. Representation and defence

The assistance of a lawyer is not compulsory, except in case of confidential binding offer exceeding 2k€.

In the event that any of the parties requires lawyer assistance, this must be stated in the ADR request or within 3 days from the date of receipt of the proposal by the receiving party, notifying the other party, so that the latter can also decide to use a lawyer within 3 days of receipt of the latter notification.

6. What is the effect of ADRs on statute of limitations?

The statute of limitations is interrupted (or the period of expiry of actions is suspended) from the date on which the attempt to communicate the request to the other party is recorded – at the personal domicile, at the workplace or by the electronic means of communication used by the parties in their previous relations.

Both (interruption or suspension) continue until the earliest of (a) the date on which the agreement is signed or (b) the negotiation is terminated without an agreement. The statute of limitations restart to run if the first meeting aimed at reaching an agreement is not held (or a written response is not obtained) within 30 calendar days from the date of receipt of the invitation.

Other complementary rules apply depending on the ADR method used.

7. Consequences of non-compliance

Failure to prove the existence of an ADR attempt will lead to automatic inadmissibility of the relevant Court claim. Courts are already rejecting claims filed after 4 April 2025 that lack the required certificate or document reflecting the negotiating activity.

The plaintiff will have to start the process again, which can signify a costly mistake.

8. Practical impact (first 7 months – November 2025)

– Initial assessments: according to the Madrid Bar Association “the first months of the law have revealed serious practical problems: disparate criteria between courts, legal uncertainty in the accreditation of ADRs and an increase in the bureaucratic burden that hinders access to justice. It is essential to correct these deficiencies so that the law fulfils its purpose without generating more obstacles to citizens or the legal profession”.

– Remaining uncertainty: The wait for secondary regulation as well as a certain lack of imprecision leaves some grey areas.

Secondary legislation should be approved according to the following calendar:

– Before 3-4-2027 -2 years from the entry into force of LO 1/2025-, regulating ADRs when one of the parties is a public administration;

– before 3-4-2026 -1 year from the entry into force of LO 1/2025-, regulating the statute of the neutral “third party” intervening in any of the ADR -until its approval, the personal statute of the “mediator” provided for in L 5/2012 and, where appropriate, in regional legislation will apply-.

– Court congestion: Paradoxically, the first months have seen a temporary increase in procedural incidents (inadmissibility motions), but the legal profession forecasts a drop in new ordinary civil trials by the end of 2026.

9. Recommendations for in-house counsel and law firms
10. Update templates immediately

   Include a specific ADR clause in all new contracts (leases, supply, distribution, SPAs, shareholders’ agreements). Best practice: designate mediation or conciliation as the default method and appoint a recognised centre.

1. Create internal ADR protocols

   Standard letters, 30-day negotiation timelines, appointment of internal “settlement officers”.

iii. Train commercial teams

   Sales and credit-control staff must know that legal action is no longer the first option.

1. Review limitation periods

The ADR attempt interrupts prescription and limitation (caducidad) from the moment it is formally initiated.

Conclusion

Spain’s mandatory pre-action ADR is already reshaping civil litigation culture, as even if pre-trial mediation and conciliation were already recognised and even encouraged, they were not compulsory.

While the transitional uncertainty will probably require legislative fine-tuning in 2026 and 2027, the direction is clear: settle early or face inadmissibility and attendant delays and costs.

Companies and practitioners who adapt their contracts and internal processes now will gain a significant strategic and financial advantage in the new Spanish litigation landscape.

For further details or model ADR clauses in English and Spanish, feel free to contact the author.