A Warsaw-based consumer goods distributor receives a coordinated complaint from 47 customers alleging the same defective product. Each individual claim is modest – perhaps PLN 3,000 per claimant. Individually, none would justify litigation. Together, they form the basis of a pozew grupowy (group action) that could expose the company to aggregate liability exceeding PLN 140,000 – plus costs and reputational damage that outlast the proceedings.

Polish group action procedure is governed by the Act on Pursuing Claims in Group Proceedings, which sets a minimum threshold of 10 claimants asserting the same or similar factual basis. The court must certify the group before any merits hearing proceeds. Certification hearings routinely take 6 to 18 months at first instance, creating a prolonged period of legal uncertainty for defendant companies.

This alert explains the current state of Polish group litigation, identifies who is most exposed, and sets out the immediate steps defendants and potential claimants should take now.

What does the current framework require?

Polish group proceedings follow a two-stage structure. First, the court decides whether to certify the group. Second, it rules on the merits. Both stages involve distinct procedural rights and deadlines that differ sharply from ordinary civil litigation in Poland.

Certification requires at least 10 claimants, a common factual basis, and a claim type that falls within the statute's permitted categories. Those categories cover consumer protection, product liability, and tortious harm from a single event. Contract claims between businesses are generally excluded – a point that surprises many foreign clients entering the Polish market for the first time.

The National Court Register (KRS) and court records show that financial services, energy, and construction sectors generate the highest volume of group filings. For defendants in these sectors, the risk is not theoretical. The District Court in Warsaw (Sąd Okręgowy w Warszawie) handles the majority of high-value group actions, and its docket has grown steadily since 2020.

  • Minimum group size: 10 claimants
  • Permitted claim types: consumer, product liability, single-event tort
  • Certification decision: typically within 6–18 months
  • Appeal against certification: suspends merits proceedings
  • Standardisation of claims: required before the court sets damages

One practical complexity concerns standardisation. Polish group procedure requires claimants to standardise their individual claims into uniform amounts or bands before the court can assess damages. This step – often underestimated by claimant representatives – can itself take 12 months or more and is a frequent ground for defendants to challenge the group's viability.

Who is affected and what should you do now?

Any company selling to Polish consumers, operating infrastructure, or involved in mass-tort scenarios faces group action exposure. The threshold is low. Ten dissatisfied customers, coordinated by a single law firm or consumer association, can trigger proceedings within weeks. The consequences – injunctions, asset freezes, and reputational harm – can be irreversible once proceedings are certified.

We secured a reversal of a certification order for a manufacturing client in the Mazowieckie region (autumn 2025), demonstrating that early procedural intervention – before the court issues its certification ruling – is far more effective than challenging the group at the merits stage.

For foreign investors, the complexity compounds. A German investor operating a subsidiary in Lower Silesia (spring 2026) faced a group action filed simultaneously with a KIO appeal (procurement challenge), creating parallel proceedings that required coordinated sanctions compliance checks before any settlement could be discussed. This intersection of dispute resolution for UK companies doing business in Poland and local procedural law is precisely where early legal advice prevents irreversible procedural losses.

Immediate action items for companies currently exposed:

  • Audit customer complaint volumes – a pattern of 8 or more similar complaints is an early warning signal
  • Review contracts for arbitration clauses that may exclude group proceedings
  • Assess whether any pending dispute involves environmental liability (see environmental due diligence for Polish real estate for related exposure)
  • Conduct a sanctions screening review if counterparties include entities from sanctioned jurisdictions
  • Appoint a dispute lawyer with group-action experience before any formal notification arrives

The window for effective pre-certification defence is narrow. Once the court issues a certification ruling, the defendant's options narrow sharply. Challenging certification on appeal suspends merits proceedings – which sounds advantageous – but also extends uncertainty and increases litigation costs. Acting before the filing is always preferable to reacting after it.

For potential claimants, the calculus is different. A group action is often the only economically rational route when individual claims fall below PLN 10,000. Coordination with other affected parties and early engagement with a litigation Warsaw specialist can determine whether a group reaches the statutory minimum and qualifies for certification.

Specific deadlines to note: defendants have 14 days from service of the group action to raise a preliminary objection to the court's jurisdiction. Missing this deadline forfeits the right to challenge jurisdiction entirely – an irreversible procedural consequence that no defendant should risk through inaction.

To receive an expert assessment of your group action exposure or defence strategy, contact info@kordeckipartners.com.

Frequently asked questions

Q: Can a group action be brought against a foreign company with no Polish registered office?

A: Yes. Polish courts assert jurisdiction over foreign defendants where the harmful event occurred in Poland or where the defendant has a branch or assets in Poland. The National Court Register (KRS) registration is not a prerequisite for a group action to proceed. Foreign companies should verify their exposure through a jurisdiction analysis before any claim is filed.

Q: How long does a full group action take from filing to final judgment?

A: A realistic timeline is 3 to 7 years, depending on the complexity of the standardisation phase and whether certification is appealed. The certification stage alone averages 12 to 18 months in Warsaw courts. Settlements negotiated after certification but before the merits hearing typically close within 6 to 12 months of the parties entering structured mediation.

Q: Is it a misconception that arbitration clauses always block group proceedings?

A: Yes – this is a common misunderstanding. Polish courts have held that a standard arbitration clause in a consumer contract does not automatically exclude group proceedings, particularly where the clause is deemed an unfair term under consumer protection law. Arbitration Poland strategy must be designed specifically to address group action risk, not simply incorporated from a standard template.

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 group proceedings defence. 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.