Arbitration and Mediation in Thailand: Resolving Disputes Outside Court
207 Views
Why This Matters Most to Foreign Parties
The central practical point is enforcement. A judgment from a foreign court is not directly enforceable in Thailand, and a party holding one usually has to bring fresh proceedings here, using the judgment as evidence rather than as an enforceable order.
Arbitration is different. An arbitral award, wherever made, binds the parties, and on application to a competent court it can be enforced. Where the award was made abroad, the court will enforce it if it falls under a treaty, convention, or international agreement to which Thailand is a party, and only to the extent Thailand has bound itself. Thailand is a party to the New York Convention, which is what makes foreign awards enforceable here in practice.
For an international contract with a Thai counterparty, that difference is usually the strongest argument for an arbitration clause.
What Makes an Arbitration Agreement Valid
An arbitration agreement is an agreement by which the parties submit to arbitration all or some disputes that have arisen or may arise between them, whether or not those disputes arise from a contractual relationship. It may be a clause within a main contract or a separate agreement.
The formal requirement is that there must be written evidence signed by the parties. The law is flexible about what satisfies this. A clause appearing in correspondence exchanged by letter, fax, telegram, telex, or electronic data interchange with an electronic signature will do, as will any other medium recording the agreement. An arbitration agreement also exists where one party asserts it in a claim or defence and the other does not deny it. And where a written contract refers to another document containing an arbitration clause, with the intention that it form part of the main contract, that is sufficient.
The practical lesson is that the clause should be drafted deliberately rather than copied, and it should specify the seat, the institution or rules, the number of arbitrators, and the language of the proceedings. Vague clauses generate satellite litigation about the clause itself.
The Clause Keeps You Out of Court
An arbitration agreement has real teeth against a party who ignores it and sues.
Where one party brings a court claim concerning a dispute covered by an arbitration agreement without submitting it to arbitration, the defendant may apply to the court, no later than the date for filing a defence or within the period allowed for filing it, for an order striking out the case so the parties can proceed to arbitration. After inquiry, if the court finds no reason making the arbitration agreement void, unenforceable, or impossible to perform, it must strike out the case.
The deadline is critical. A defendant who files a defence on the merits without making that application may be treated as having accepted the court's jurisdiction. If you are sued in breach of an arbitration clause, the objection must be raised immediately.
Note also that while such an application is pending, either party may commence arbitration and the tribunal may continue and make an award. The court process does not freeze the arbitration.
Interim Measures from the Court
Choosing arbitration does not mean giving up access to the courts for urgent protection. A party to an arbitration agreement may apply to a competent court for interim measures to protect its interests before or during arbitral proceedings, and the court will grant relief it could grant in its own proceedings.
One condition deserves attention. Where the court grants such a measure and the applicant does not commence arbitration within thirty days of the order, or within the period the court sets, the order lapses. Interim relief is therefore a step within a strategy, not a substitute for starting the arbitration.
Enforcing an Award, and the Three-Year Deadline
An award binds the parties, but it still has to be enforced through the courts if the losing side does not comply.
A party seeking enforcement must apply to a competent court within three years from the date the award becomes enforceable. On receiving the application the court is required to inquire and give judgment without delay.
The applicant must produce the original award or a certified copy, the original arbitration agreement or a certified copy, and a Thai translation of both, certified by a sworn translator, an authorised official, or a Thai diplomatic or consular representative in the country where the award or agreement was made.
Three years is generous compared with some deadlines in Thai law, but it is fixed, and the translation and certification requirements take time. Enforcement should be prepared well before the deadline approaches.
Grounds for Refusing Enforcement
Enforcement is not automatic. A Thai court may refuse to enforce an award on limited grounds, broadly aligned with the New York Convention framework. These include incapacity of a party, invalidity of the arbitration agreement, lack of proper notice or inability to present a case, an award going beyond the scope of the submission, an irregularly constituted tribunal or procedure, an award that is not yet binding or has been set aside, a dispute not capable of settlement by arbitration under Thai law, and enforcement that would be contrary to public order or good morals.
The list is deliberately narrow. Thai courts do not re-hear the merits, and dissatisfaction with the tribunal's findings is not a ground for refusal.
Mediation as a Separate Route
Mediation in Thailand exists in two forms, and it is worth distinguishing them.
Court-annexed mediation is built into ordinary litigation. Thai courts actively encourage settlement, and a large share of civil and labour cases conclude by agreement recorded before a judge rather than by contested judgment.
Separately, the Dispute Mediation Act provides a statutory framework for mediation outside court proceedings, and it gives the resulting settlement real force. Where one party demands performance of a settlement agreement and the other fails to comply, the party seeking performance may apply to the court to enforce it.
That application must be made within three years from the date the settlement agreement becomes enforceable. If it is not, the obligation under the settlement agreement is extinguished. The application is filed with the court where the settlement was made, or where either party is domiciled, or which would have had jurisdiction over the underlying dispute, and the court fee is the same as that for enforcing a domestic arbitral award.
A mediated settlement is therefore not merely a moral commitment. It is an enforceable obligation with its own limitation period.
Choosing Between Litigation, Arbitration, and Mediation
Arbitration suits international commercial contracts, disputes where confidentiality matters, and cases where the counterparty holds assets outside Thailand, because a foreign award is enforceable in many jurisdictions while a Thai judgment often is not. It also allows the parties to select arbitrators with relevant technical expertise. The trade-offs are cost, since the parties pay the tribunal and the institution, and the absence of a general right of appeal.
Litigation suits domestic disputes, straightforward debt claims, matters requiring court powers such as bankruptcy, and cases where the low court filing fee is an advantage.
Mediation suits almost everything, and it should generally be attempted first. It is cheaper and faster than both alternatives, it preserves commercial relationships, and a settlement agreement is enforceable through the courts.
Drafting the Clause: Practical Points
Decide the dispute resolution mechanism when the contract is negotiated, not when the relationship breaks down. Specify the seat of arbitration, the institution or rules, the number of arbitrators, and the language, since a clause that omits these invites argument. Consider a tiered clause requiring negotiation, then mediation, then arbitration. Ensure the written form requirement is satisfied. And check that the subject matter is capable of settlement by arbitration under Thai law, because some categories are not.
Frequently Asked Questions
Can I enforce a foreign arbitral award in Thailand?
Generally yes, where the award falls under a convention or agreement to which Thailand is a party, and to the extent Thailand has bound itself. Thailand is a party to the New York Convention.
What if the other side sues in court despite our arbitration clause?
Apply to the court to strike out the case no later than the date for filing your defence or within the period allowed for it. If you file a defence on the merits without objecting, you may lose the point.
How long do I have to enforce an award?
Three years from the date the award becomes enforceable, and you will need certified copies and a certified Thai translation of the award and the arbitration agreement.
Can I get an injunction if we agreed to arbitrate?
Yes. A court may grant interim measures before or during arbitration, but the order lapses if you do not commence arbitration within thirty days or the period the court sets.
Is a mediated settlement enforceable?
Yes. Under the Dispute Mediation Act you may apply to the court to enforce a settlement agreement, within three years from when it becomes enforceable, after which the obligation is extinguished.
Speak to a Thai Dispute Resolution Lawyer
The most valuable work in dispute resolution is done before any dispute exists, in the clause that decides where and how a disagreement will be resolved. Our bilingual lawyers draft arbitration and tiered dispute resolution clauses, represent clients in arbitration and mediation, apply to strike out proceedings brought in breach of arbitration agreements, and enforce awards and settlement agreements in the Thai courts. Contact us at the contract stage, not at the dispute stage.
Disclaimer
This article provides general legal information only and does not constitute legal advice. The enforceability of arbitration agreements, awards, and settlement agreements depends on their terms and the facts of each case. Please consult a licensed Thai attorney before taking action.
The central practical point is enforcement. A judgment from a foreign court is not directly enforceable in Thailand, and a party holding one usually has to bring fresh proceedings here, using the judgment as evidence rather than as an enforceable order.
Arbitration is different. An arbitral award, wherever made, binds the parties, and on application to a competent court it can be enforced. Where the award was made abroad, the court will enforce it if it falls under a treaty, convention, or international agreement to which Thailand is a party, and only to the extent Thailand has bound itself. Thailand is a party to the New York Convention, which is what makes foreign awards enforceable here in practice.
For an international contract with a Thai counterparty, that difference is usually the strongest argument for an arbitration clause.
What Makes an Arbitration Agreement Valid
An arbitration agreement is an agreement by which the parties submit to arbitration all or some disputes that have arisen or may arise between them, whether or not those disputes arise from a contractual relationship. It may be a clause within a main contract or a separate agreement.
The formal requirement is that there must be written evidence signed by the parties. The law is flexible about what satisfies this. A clause appearing in correspondence exchanged by letter, fax, telegram, telex, or electronic data interchange with an electronic signature will do, as will any other medium recording the agreement. An arbitration agreement also exists where one party asserts it in a claim or defence and the other does not deny it. And where a written contract refers to another document containing an arbitration clause, with the intention that it form part of the main contract, that is sufficient.
The practical lesson is that the clause should be drafted deliberately rather than copied, and it should specify the seat, the institution or rules, the number of arbitrators, and the language of the proceedings. Vague clauses generate satellite litigation about the clause itself.
The Clause Keeps You Out of Court
An arbitration agreement has real teeth against a party who ignores it and sues.
Where one party brings a court claim concerning a dispute covered by an arbitration agreement without submitting it to arbitration, the defendant may apply to the court, no later than the date for filing a defence or within the period allowed for filing it, for an order striking out the case so the parties can proceed to arbitration. After inquiry, if the court finds no reason making the arbitration agreement void, unenforceable, or impossible to perform, it must strike out the case.
The deadline is critical. A defendant who files a defence on the merits without making that application may be treated as having accepted the court's jurisdiction. If you are sued in breach of an arbitration clause, the objection must be raised immediately.
Note also that while such an application is pending, either party may commence arbitration and the tribunal may continue and make an award. The court process does not freeze the arbitration.
Interim Measures from the Court
Choosing arbitration does not mean giving up access to the courts for urgent protection. A party to an arbitration agreement may apply to a competent court for interim measures to protect its interests before or during arbitral proceedings, and the court will grant relief it could grant in its own proceedings.
One condition deserves attention. Where the court grants such a measure and the applicant does not commence arbitration within thirty days of the order, or within the period the court sets, the order lapses. Interim relief is therefore a step within a strategy, not a substitute for starting the arbitration.
Enforcing an Award, and the Three-Year Deadline
An award binds the parties, but it still has to be enforced through the courts if the losing side does not comply.
A party seeking enforcement must apply to a competent court within three years from the date the award becomes enforceable. On receiving the application the court is required to inquire and give judgment without delay.
The applicant must produce the original award or a certified copy, the original arbitration agreement or a certified copy, and a Thai translation of both, certified by a sworn translator, an authorised official, or a Thai diplomatic or consular representative in the country where the award or agreement was made.
Three years is generous compared with some deadlines in Thai law, but it is fixed, and the translation and certification requirements take time. Enforcement should be prepared well before the deadline approaches.
Grounds for Refusing Enforcement
Enforcement is not automatic. A Thai court may refuse to enforce an award on limited grounds, broadly aligned with the New York Convention framework. These include incapacity of a party, invalidity of the arbitration agreement, lack of proper notice or inability to present a case, an award going beyond the scope of the submission, an irregularly constituted tribunal or procedure, an award that is not yet binding or has been set aside, a dispute not capable of settlement by arbitration under Thai law, and enforcement that would be contrary to public order or good morals.
The list is deliberately narrow. Thai courts do not re-hear the merits, and dissatisfaction with the tribunal's findings is not a ground for refusal.
Mediation as a Separate Route
Mediation in Thailand exists in two forms, and it is worth distinguishing them.
Court-annexed mediation is built into ordinary litigation. Thai courts actively encourage settlement, and a large share of civil and labour cases conclude by agreement recorded before a judge rather than by contested judgment.
Separately, the Dispute Mediation Act provides a statutory framework for mediation outside court proceedings, and it gives the resulting settlement real force. Where one party demands performance of a settlement agreement and the other fails to comply, the party seeking performance may apply to the court to enforce it.
That application must be made within three years from the date the settlement agreement becomes enforceable. If it is not, the obligation under the settlement agreement is extinguished. The application is filed with the court where the settlement was made, or where either party is domiciled, or which would have had jurisdiction over the underlying dispute, and the court fee is the same as that for enforcing a domestic arbitral award.
A mediated settlement is therefore not merely a moral commitment. It is an enforceable obligation with its own limitation period.
Choosing Between Litigation, Arbitration, and Mediation
Arbitration suits international commercial contracts, disputes where confidentiality matters, and cases where the counterparty holds assets outside Thailand, because a foreign award is enforceable in many jurisdictions while a Thai judgment often is not. It also allows the parties to select arbitrators with relevant technical expertise. The trade-offs are cost, since the parties pay the tribunal and the institution, and the absence of a general right of appeal.
Litigation suits domestic disputes, straightforward debt claims, matters requiring court powers such as bankruptcy, and cases where the low court filing fee is an advantage.
Mediation suits almost everything, and it should generally be attempted first. It is cheaper and faster than both alternatives, it preserves commercial relationships, and a settlement agreement is enforceable through the courts.
Drafting the Clause: Practical Points
Decide the dispute resolution mechanism when the contract is negotiated, not when the relationship breaks down. Specify the seat of arbitration, the institution or rules, the number of arbitrators, and the language, since a clause that omits these invites argument. Consider a tiered clause requiring negotiation, then mediation, then arbitration. Ensure the written form requirement is satisfied. And check that the subject matter is capable of settlement by arbitration under Thai law, because some categories are not.
Frequently Asked Questions
Can I enforce a foreign arbitral award in Thailand?
Generally yes, where the award falls under a convention or agreement to which Thailand is a party, and to the extent Thailand has bound itself. Thailand is a party to the New York Convention.
What if the other side sues in court despite our arbitration clause?
Apply to the court to strike out the case no later than the date for filing your defence or within the period allowed for it. If you file a defence on the merits without objecting, you may lose the point.
How long do I have to enforce an award?
Three years from the date the award becomes enforceable, and you will need certified copies and a certified Thai translation of the award and the arbitration agreement.
Can I get an injunction if we agreed to arbitrate?
Yes. A court may grant interim measures before or during arbitration, but the order lapses if you do not commence arbitration within thirty days or the period the court sets.
Is a mediated settlement enforceable?
Yes. Under the Dispute Mediation Act you may apply to the court to enforce a settlement agreement, within three years from when it becomes enforceable, after which the obligation is extinguished.
Speak to a Thai Dispute Resolution Lawyer
The most valuable work in dispute resolution is done before any dispute exists, in the clause that decides where and how a disagreement will be resolved. Our bilingual lawyers draft arbitration and tiered dispute resolution clauses, represent clients in arbitration and mediation, apply to strike out proceedings brought in breach of arbitration agreements, and enforce awards and settlement agreements in the Thai courts. Contact us at the contract stage, not at the dispute stage.
Disclaimer
This article provides general legal information only and does not constitute legal advice. The enforceability of arbitration agreements, awards, and settlement agreements depends on their terms and the facts of each case. Please consult a licensed Thai attorney before taking action.
Related Content
You buy a property in Thailand, commission a survey, and discover the neighbour's wall sits two metres inside your boundary. Or worse, someone has been living on part of your land for over a decade and now claims to own it. Land disputes are among the most bitter and expensive cases in Thailand, and the outcome often surprises people, because Thai law does not simply side with whoever holds the title deed. A trespasser can acquire ownership through possession. A neighbour who built over your line in good faith may be entitled to keep the building. This guide explains how encroachment and adverse possession work under Thai law, and what an owner must do to protect their land.
17 ส.ค. 2026
When a debtor cannot pay, Thai law offers two very different routes. Bankruptcy liquidates the debtor's assets and distributes them among creditors. Business rehabilitation keeps the business running while its debts are restructured under a court-approved plan. Which one applies changes everything for a creditor, because a rehabilitation petition triggers an automatic stay that stops lawsuits, halts enforcement, and even prevents secured creditors from realising their security. For debtors, bankruptcy is no longer permanent: individuals are discharged automatically after three years in the ordinary case. This guide explains both routes, the thresholds, and what each side needs to know.
28 ก.ย. 2026
