On paper, inserting an arbitration clause into a Polish commercial contract looks simple. In practice, a single drafting error – the wrong seat, an ambiguous scope, or a missing waiver of state-court jurisdiction – can render the clause unenforceable at the moment you need it most. For companies operating across borders, that failure forfeits the entire advantage of private dispute resolution.

Under Polish civil procedure, an arbitration clause (known as a zapis na sąd polubowny) must be in writing, must identify the subject matter or legal relationship in dispute, and must meet specific formal requirements for consumer and employment contracts. A defective clause does not merely delay proceedings – it precludes arbitration entirely, pushing the dispute into Polish state courts on the other party's terms. Correcting a flawed clause after a dispute arises is rarely possible.

This alert covers three areas: what the current requirements are, which contracts carry the highest drafting risk, and what immediate steps reduce exposure before a dispute materialises.

What are the core requirements for a valid arbitration clause in Poland?

Polish civil procedure law sets a clear baseline. The clause must be in writing – signed by both parties or exchanged in a form that preserves the text. An oral agreement to arbitrate has no legal effect. The subject matter must be defined: either a specific dispute or a category of disputes arising from an identified legal relationship. Vague language such as "all disagreements" without anchoring to a contract or relationship creates enforceability risk.

The seat of arbitration matters enormously. Designating Warsaw as the seat subjects the proceedings to Polish procedural law, including oversight by the district court (Polish: sąd okręgowy) for interim measures and enforcement. Designating a foreign seat – say, Vienna or Stockholm – means Polish courts will treat any resulting award as a foreign arbitral award, requiring a separate recognition procedure before enforcement in Poland. That process adds at least three to six months to recovery timelines.

Three elements every clause must address:

  • Written form, signed or exchanged electronically with qualified signature
  • Identified legal relationship or specific dispute category
  • Named or determinable arbitration institution, or agreed ad hoc rules

Institutional rules matter too. Clauses referencing the Court of Arbitration at the Polish Chamber of Commerce (Sąd Arbitrażowy przy Krajowej Izbie Gospodarczej, SA KIG) or the Lewiatan Court of Arbitration (Sąd Arbitrażowy przy Konfederacji Lewiatan) trigger those institutions' own procedural frameworks. A clause that names a non-existent institution – or one that has merged or changed its rules – is treated as defective. We have seen this issue arise in contracts drafted five or more years ago that reference outdated institutional names.

Which contracts carry the highest drafting risk right now?

Three contract categories generate the most enforcement failures in current Polish practice. First, cross-border supply agreements where one party is seated outside the European Union. Here, the interaction between the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards and Polish domestic procedure creates gaps that a poorly drafted clause cannot bridge. Disputes involving sanctions compliance – particularly contracts with parties subject to EU or US restrictions – add a further layer: an arbitral tribunal seated in a neutral jurisdiction may still decline jurisdiction if the underlying contract is tainted by sanctions exposure.

We secured a favourable jurisdictional ruling for a manufacturing client in the Mazowieckie region (autumn 2025), reversing a state-court challenge to an arbitration clause that had been drafted without an explicit waiver of Polish court jurisdiction. The clause had been in place for three years before the dispute arose.

Second, public procurement contracts. Disputes over public contracts above the EU threshold – currently EUR 143,000 for services and EUR 5,382,000 for works – follow a bifurcated path. Pre-award challenges go to the National Appeals Chamber (Krajowa Izba Odwoławcza, KIO), a specialist body whose decisions are not subject to ordinary arbitration. Post-award contractual disputes can go to arbitration, but only if the clause is drafted after contract signature, not before. Inserting an arbitration clause into a public procurement tender document is a common and costly error.

Third, joint venture and shareholders' agreements. Disputes between shareholders often involve both contractual claims and corporate law claims. Polish corporate legislation limits arbitrability of certain resolutions of shareholders' meetings. A clause drafted too broadly may purport to send non-arbitrable disputes to arbitration – which a Polish court will sever, potentially leaving the most commercially sensitive issues in state court.

For US companies operating in Poland, the interaction between Polish arbitration law and US litigation strategy raises additional questions covered in our analysis of dispute resolution for United States companies doing business in Poland.

What immediate steps should you take before your next contract is signed?

The window for correcting an arbitration clause closes the moment a dispute is filed. Once proceedings begin – whether in a Polish state court or before an arbitral tribunal – the other party can challenge jurisdiction, and the procedural costs of that challenge fall entirely on you if the clause is defective. Personal liability does not arise here, but the commercial consequence is equally irreversible: you lose the forum you chose and gain an adversarial proceeding you did not plan for.

Our team obtained interim protective measures for a German investor's subsidiary in Lower Silesia (spring 2026), preserving assets worth over EUR 3m while a jurisdictional dispute over a defective arbitration clause was resolved. The clause had omitted any reference to governing law, creating a six-month delay before the tribunal could proceed.

Immediate action checklist:

  • Audit all active commercial contracts with dispute values above PLN 500,000 for arbitration clause validity
  • Confirm the named institution exists and its current rules apply
  • Add an explicit waiver of state-court jurisdiction where Polish law permits
  • Check arbitrability of all claim types covered by the clause
  • For cross-border contracts, align the seat, governing law, and enforcement jurisdiction

Companies with internal compliance programmes – including those implementing whistleblower reporting obligations – should also review whether their whistleblower channel design creates parallel dispute pathways that interact with arbitration clauses. A whistleblower complaint can trigger regulatory proceedings that run alongside, and sometimes undermine, a contractual arbitration process.

For contracts involving parties in the UAE or other non-EU jurisdictions, enforcement of any resulting award requires a separate recognition step in Poland. The procedural map for that process is set out in our guide to enforcing a UAE judgment in Poland.

The practical benchmark: a well-drafted arbitration clause for a Polish commercial contract takes two to four hours of legal review. Correcting a defective clause after a dispute arises – through jurisdictional litigation, parallel proceedings, or enforcement challenges – typically costs ten to twenty times that investment.

Your contracts may already contain a defective clause. If your business operates in Poland and your dispute values exceed PLN 500,000, a clause audit now forecloses the risk of losing your chosen forum when it matters most.

To receive an expert assessment of your arbitration clause drafting, contact info@kordeckipartners.com.

Frequently asked questions

Q: Can we add an arbitration clause to an existing contract without re-signing the whole agreement?

A: Yes. Polish contract law permits amendment by a separate written addendum signed by both parties. The addendum must meet the same formal requirements as the original clause – written form, identified legal relationship, named institution or rules. A one-page addendum is sufficient, provided both parties sign before any dispute arises. Once a dispute is filed, adding or amending the clause requires the other party's cooperation, which is rarely forthcoming.

Q: Is there a minimum contract value below which arbitration clauses are not worth including?

A: There is no statutory minimum. In practice, institutional arbitration in Poland involves filing fees and administrative costs that make it economically inefficient for disputes below approximately PLN 200,000. For lower-value contracts, a tiered clause – mediation first, then arbitration – or a simple choice-of-court clause designating a specific Polish district court is often more practical. The choice depends on the counterparty's jurisdiction and the likely nature of any dispute.

Q: Does a foreign-law arbitration clause automatically override Polish mandatory rules?

A: No. Polish mandatory provisions – including consumer protection rules, employment law protections, and certain corporate law requirements – apply regardless of the governing law or arbitration seat chosen by the parties. A clause that purports to arbitrate claims that Polish law designates as non-arbitrable will be severed by a Polish court. The rest of the clause may survive, but the non-arbitrable claims will proceed in state court, often on an unpredictable timetable.

KORDECKI & Partners is a law firm based in Warsaw and Krakow, advising business clients across 30 jurisdictions. Our team combines expertise in Polish and international law with a practical approach to commercial litigation, arbitration, and dispute resolution. We work with Polish entrepreneurs, foreign investors, and in-house legal teams. To discuss your situation, contact info@kordeckipartners.com.

Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. KORDECKI & Partners assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@kordeckipartners.com.