A Warsaw-based technology company decides to send three engineers to its Kraków subsidiary for an 18-month project. The HR team assumes the move is purely internal. Within weeks, they discover that Polish social security rules, tax residency triggers, and work authorisation requirements each follow their own logic – and none of them align neatly with the employment contract.

Relocating employees within Poland, or outbound from Poland to another jurisdiction, activates a layered compliance framework. Polish social insurance law, administered by the Social Insurance Institution (Zakład Ubezpieczeń Społecznych, ZUS), sets contribution thresholds and posting rules that apply from day one. Tax residency under Polish personal income tax law shifts after 183 days of presence in a calendar year. Work authorisation requirements depend on the employee's citizenship and the nature of the assignment. Missing any of these triggers carries personal liability for the employer and, in cross-border cases, precludes recovery of overpaid contributions for up to five years.

This alert covers three immediate compliance pressure points: what changed in the Polish regulatory framework, which employee categories are affected, and what actions employers must complete – and by when.

What has changed in the Polish regulatory framework for employee relocation?

Polish employment and social security law has tightened its grip on intra-group mobility over the past 18 months. The National Labour Inspectorate (Państwowa Inspekcja Pracy, PIP) has expanded audit scope to cover domestic reassignments, not only cross-border postings. ZUS has updated its guidance on A1 certificate eligibility, narrowing the conditions under which an employee posted abroad retains Polish social insurance coverage. The National Court Register (Krajowy Rejestr Sądowy, KRS) requirements for branch registrations have also been clarified, affecting employers who establish operational bases in new Polish cities.

For outbound relocations, the EU Blue Card framework – transposed into Polish law – now competes with the standard work permit Poland route in ways that matter for cost and processing time. An EU Blue Card requires a minimum gross salary threshold (currently set by regulation and reviewed annually). Standard Type A work permits carry a 30-day processing target at the regional governor's office (Urząd Wojewódzki), though backlogs in Warsaw and Kraków regularly extend that to 60–90 days. Employers who fail to account for this timeline forfeit the ability to deploy the employee on schedule – an irreversible consequence when project contracts carry fixed start dates.

The whistleblower protection framework, introduced under the Act on the Protection of Persons Reporting Violations of Law, adds a further layer. Any employee relocated to a Polish entity with more than 50 staff must be informed of the internal reporting channel before or at the point of reassignment. Failure to do so exposes the receiving entity to administrative fines of up to PLN 40,000.

Who is affected and what are the key thresholds?

Not every relocation triggers the full compliance stack. The rules vary by citizenship, assignment length, and whether the move is domestic or cross-border. Three categories carry the highest immediate risk.

  • Non-EU nationals relocating to Poland – require a valid work permit or EU Blue Card before commencing work. No grace period applies. Unauthorised work triggers fines of up to PLN 30,000 per employee under the Act on the Promotion of Employment.
  • EU nationals posted outbound from Poland – must hold an A1 certificate confirming continued ZUS coverage if the posting exceeds 60 days. Without it, the host country may claim social contributions retroactively.
  • Domestic reassignments exceeding 3 months – trigger a formal amendment to the employment contract under the Labour Code (Kodeks pracy). Verbal or email-only arrangements do not satisfy the written-form requirement and expose the employer to claims of unilateral change of working conditions.

We secured a correction of ZUS contribution assessments exceeding PLN 850,000 for a manufacturing client in the Silesia region (autumn 2025). The employer had treated a 14-month domestic reassignment as a temporary secondment and had not updated contribution bases accordingly. The correction required a full audit of payroll records going back three years.

For cross-border scenarios, the 183-day rule under Polish personal income tax law is the most frequently misunderstood threshold. An employee who spends more than 183 days in Poland in a calendar year becomes a Polish tax resident. The employer then becomes obligated to withhold Polish personal income tax on worldwide income – not just Polish-source income. This obligation arises automatically. It does not depend on whether the employee has registered a Polish address.

For guidance on A1 certificate procedures for employees posted from the United Kingdom, see our detailed analysis of posted workers from the United Kingdom to Poland and A1 certificates.

What immediate actions must employers take – and by when?

Compliance gaps in global mobility compound quickly. A missed work permit application delays deployment by months. An unregistered domestic reassignment creates a litigation risk that surfaces only when the employment relationship ends. The following checklist covers the minimum actions required before any relocation takes effect.

  • Confirm the employee's citizenship and verify whether a work permit or EU Blue Card is required – at least 90 days before the planned start date.
  • Apply for an A1 certificate from ZUS for any outbound posting exceeding 60 days – before the employee leaves Polish territory.
  • Execute a written contract amendment for any domestic reassignment lasting more than 3 months – no later than the date the reassignment begins.
  • Notify the employee of the internal whistleblower reporting channel if the receiving entity employs more than 50 people – at or before the point of reassignment.
  • Assess tax residency status for any employee present in Poland for more than 150 days in the current calendar year – to allow time for payroll adjustments before the 183-day threshold is crossed.

We obtained an advance ruling from the Polish tax authority confirming non-resident status for a senior manager employed by a German investor's subsidiary in Mazowieckie (spring 2026). The ruling prevented a retroactive personal income tax assessment that would have exceeded EUR 120,000. The key was filing the application before the 183-day threshold was reached – not after.

Timing is not a formality. For outbound postings to Switzerland, the A1 certificate procedure follows a separate bilateral framework. Our analysis of posted workers from Switzerland to Poland and A1 certificates sets out the specific steps. For employers managing dividend flows alongside mobility costs, the interaction between personal income tax obligations and profit distribution rules is addressed in our note on dividend distribution rules for Polish companies.

The specific circumstances of your company's relocation programme determine which instruments apply and in what sequence. Acting after the threshold is crossed forfeits the ability to correct the position without penalty.

To receive an expert assessment of your global mobility compliance position, contact info@kordeckipartners.com. Our employment team will review your assignment structure, identify the applicable thresholds, and prepare the required documentation – before deadlines become irreversible.

Frequently asked questions

Q: Does a domestic reassignment within Poland require a new work permit for a non-EU national?

A: A work permit in Poland is tied to a specific employer and, in most cases, a specific workplace location. Relocating a non-EU national employee to a different city or entity within the same corporate group typically requires a new or amended permit. The application must be filed with the regional governor's office of the new work location. Processing takes up to 30 days under statute, though practical timelines in major cities are longer.

Q: How quickly can ZUS issue an A1 certificate for an outbound posting?

A: ZUS targets a 30-day processing time for standard A1 certificate applications. Complex cases – including those involving simultaneous activity in multiple countries – can take up to 3 months. Employers should apply well before the posting start date. Operating without a valid A1 certificate exposes the employee to double social insurance contributions in both Poland and the host country.

Q: Is it a common misconception that short-term relocations carry no compliance obligations?

A: Yes. Many employers assume that assignments under 3 months fall below all regulatory thresholds. In practice, the work permit requirement for non-EU nationals applies from the first day of work, regardless of assignment length. The whistleblower notification obligation also applies immediately upon reassignment to a qualifying entity. Only the written contract amendment requirement has a 3-month trigger under the Labour Code.

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 global mobility, employment compliance, and cross-border workforce management. 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.