A Warsaw-based IT company hires a specialist on a six-month fixed-term contract. The contract is renewed twice, then extended once more. Nobody counts the running total. By the time HR raises a flag, the employee has passed 33 months of fixed-term employment – and Polish labour law has already converted the relationship into a contract of indefinite duration. The conversion is automatic. No court ruling is needed. No notice is required. The open-ended contract simply exists.
Polish employment law caps fixed-term employment at 33 months in total and limits the number of fixed-term contracts between the same parties to three. Exceeding either limit converts the contract into one of indefinite duration by operation of law, under the Kodeks pracy (Labour Code, KP). The conversion takes effect on the day the limit is breached, not on the date any subsequent document is signed.
This guide explains the 33-month rule step by step: how the count works, which contracts are excluded, what employers must do when the threshold is near, and how three common business scenarios – a manufacturing plant, an IT firm, and a foreign investor's subsidiary – interact with the rule. It also addresses the cost of getting it wrong and the practical steps that prevent automatic conversion from becoming a liability.
How does the 33-month rule work in practice?
The Labour Code sets two parallel limits. First, the total duration of all fixed-term contracts between the same employer and the same employee must not exceed 33 months. Second, no more than three such contracts may be concluded. Whichever limit is reached first triggers the conversion. Both limits apply simultaneously – not as alternatives.
The 33-month count begins on the start date of the first fixed-term contract. Each subsequent contract adds to the running total. Gaps between contracts do not reset the clock, provided the employment relationship is considered continuous for statutory purposes. The National Labour Inspectorate (Państwowa Inspekcja Pracy, PIP) treats the substance of the relationship, not its formal packaging, as the decisive factor.
Amendments to the Labour Code introduced these limits to align Polish law with European Union Directive 1999/70/EC on fixed-term work. Before the amendment, employers could chain contracts indefinitely. The current framework closed that route. Employers who fail to track the aggregate duration now face automatic conversion – and all the obligations that come with indefinite employment, including enhanced dismissal protection and the requirement to justify termination.
One figure matters above all others: day 1,004. That is the first day of month 34. If an employee is still on a fixed-term contract on that day, the contract is already an indefinite one. The employer's internal records may still show "fixed-term," but the legal reality differs. PIP inspectors check precisely this discrepancy during audits.
Which contracts are excluded from the limit?
Not every fixed-term arrangement counts toward the 33-month ceiling. The Labour Code lists specific exclusions. Understanding them is essential before designing any workforce strategy that relies on temporary contracts.
The main statutory exclusions cover the following situations:
- Contracts concluded to replace an absent employee (replacement contracts)
- Contracts for work of a seasonal or periodic nature
- Contracts concluded for a term of office (e.g., a management board member employed under a contract of employment)
- Contracts where the employer demonstrates objective reasons related to its actual needs, provided the employer notifies the district labour office (Okręgowy Urząd Pracy, OUP) within five working days of concluding the contract
The objective-reasons exclusion is the most frequently used – and the most frequently misused. The employer must state the objective reason in the contract itself. A general reference to "business needs" is insufficient. The reason must be specific, verifiable, and genuinely temporary. PIP inspectors routinely challenge vague formulations. If the stated reason does not hold up, the exclusion falls away and the contract counts toward the limit.
We secured a reversal of a PIP enforcement decision for a manufacturing client in the Silesia region (autumn 2025). The employer had relied on the objective-reasons exclusion for a series of contracts covering a long-term infrastructure project. PIP initially classified the arrangement as a chain of ordinary fixed-term contracts. We demonstrated that each contract was tied to a discrete project phase with a defined end date, satisfying the specificity requirement. The decision was overturned within six weeks.
Employers in sectors such as construction, agriculture, and event management use seasonal exclusions regularly. The key is that the work itself – not the employer's preference – must be genuinely seasonal. A logistics company that experiences a predictable peak in November and December each year may qualify. One that simply prefers short contracts does not.
What happens when the limit is breached?
Conversion is the immediate consequence. The fixed-term contract becomes a contract of indefinite duration on the day the 33-month threshold is crossed or the fourth contract is signed. No court order is needed. No employer action triggers the change. The law operates automatically.
The practical consequences are significant. An indefinite-duration contract can only be terminated by giving notice with a written, specific reason. The notice period depends on the employee's total period of service: one month after six months, three months after three years. Terminating without a valid, documented reason exposes the employer to a claim before the Labour Court (sąd pracy). The employee may seek reinstatement or compensation of up to three months' salary.
Employers sometimes attempt to "correct" the situation after the fact – by issuing a new fixed-term contract, or by asking the employee to sign a document acknowledging the fixed-term nature of the relationship. Neither approach works. The conversion already occurred. Any subsequent document purporting to create a new fixed-term contract is void to the extent it contradicts the statutory outcome. The employee retains all rights arising from the indefinite-duration contract.
For a foreign investor's subsidiary in Poland, this dynamic creates a specific risk. Headquarters may issue a global HR instruction to keep local headcount "flexible" through short-term contracts. If the local entity follows that instruction without adapting it to Polish law, it will accumulate converted contracts without knowing. The liability sits with the Polish entity. Personal liability of the HR manager or board member is possible if the breach is found to be intentional.
To discuss how automatic conversion applies to your workforce structure, email info@kordeckipartners.com.
How should employers track and manage the 33-month threshold?
Prevention is straightforward in principle and often neglected in practice. The employer needs a tracking system that records, for each employee, the start date of the first fixed-term contract, the number of contracts concluded, and the aggregate duration to date. A spreadsheet is adequate for small teams. For larger organisations, the function should sit within the HR information system with automated alerts at 27 months and again at 30 months.
The 27-month alert gives the employer a six-month window to make a decision: convert voluntarily to indefinite duration, allow the contract to expire naturally, or assess whether an exclusion applies and can be properly documented. Waiting until month 32 leaves little room for error.
Three business scenarios illustrate the range of practical choices:
- Manufacturing plant (Mazowieckie region): A factory employs 40 production workers on rolling six-month contracts. At month 30, it reviews the roster. Twelve workers have reached 30 months. The plant converts those twelve to indefinite contracts proactively, avoiding automatic conversion and aligning severance provisions with its budget cycle.
- IT services firm (Kraków): A software house hires project specialists on 12-month contracts linked to client engagements. It uses the objective-reasons exclusion for contracts tied to named client projects, documents the reason in each contract, and notifies the district labour office within five working days. The contracts are excluded from the limit for as long as the project-specific reason genuinely applies.
- Foreign investor's subsidiary (Lower Silesia): A German group's Polish subsidiary receives a global HR mandate to limit permanent headcount. Polish employment counsel reviews the mandate and identifies 18 employees approaching the 33-month ceiling. The subsidiary converts 14 to indefinite contracts and structures exit packages for four whose roles are genuinely redundant. The group avoids a PIP audit finding and the associated reputational risk.
Our team obtained interim protection for employment records worth over EUR 1m in disputed severance claims for a logistics client in Pomerania (spring 2026). The underlying issue was unconverted fixed-term contracts that had been treated as expired. Proper tracking would have prevented the dispute entirely.
For a tailored strategy on fixed-term contract management, reach out to info@kordeckipartners.com.
What are the compliance obligations for foreign nationals and work permit holders?
Fixed-term contracts are common for foreign employees. This creates a layered compliance challenge. The employment contract must remain valid throughout the work permit Poland validity period. But the 33-month rule applies to the employment contract independently of the permit. A permit renewed for a third time does not reset the contractual count.
An EU Blue Card holder employed on successive fixed-term contracts is subject to the same statutory limits as a Polish national. The Blue Card does not create an exemption. If the underlying employment contract converts to indefinite duration, the permit documentation must be updated to reflect the new contract type. Failure to do so creates an inconsistency that immigration authorities may flag on renewal.
Non-EU nationals employed under work permits typically receive contracts aligned to the permit duration – often 12 or 24 months. Three such contracts bring the employee to 36 months. The third contract, if it would push total duration past 33 months, converts to indefinite duration on the day the 33-month mark is reached – not on the contract's stated end date. The employer must recognise this mid-contract conversion and manage the permit renewal accordingly.
For companies covered by the employment lawyer Warsaw framework – particularly Dutch-owned entities with Polish operations – the interaction between home-country HR standards and Polish fixed-term rules is a recurring source of non-compliance. Dutch employment contracts can be fixed-term for up to three years under Dutch law. That standard does not travel to Poland. Each Polish contract is governed by Polish law regardless of the group's home jurisdiction.
What are the most common mistakes and how can they be avoided?
The most frequent mistake is treating the 33-month rule as a contract-by-contract question rather than a cumulative one. Employers check whether an individual contract exceeds 33 months. It rarely does. The issue is the running total across all contracts, which can creep past the threshold across three or four short agreements without triggering any single-contract review.
The second mistake is misusing the objective-reasons exclusion. Inserting a boilerplate clause – "the employer has objective reasons related to its temporary needs" – does not satisfy the statutory requirement. The reason must be specific to the role, the project, or the business circumstance. It must be stated in the contract at the time of signing, not added later. And the employer must notify the district labour office within five working days.
The third mistake involves whistleblower protection. Under the Polish ustawa o ochronie sygnalistów (Whistleblower Protection Act), an employee who reports a labour law violation – including unlawful use of fixed-term contracts – is protected from retaliation. An employer who terminates a fixed-term contract shortly after such a report faces a presumption of retaliatory dismissal. The burden of proof shifts to the employer. This interaction is addressed in the whistleblower Poland compliance framework.
A practical checklist for employers:
- Maintain a running log of fixed-term contract start dates and aggregate durations per employee
- Set automated alerts at 27 months and 30 months
- Review objective-reasons clauses before each contract renewal – confirm the reason remains genuine and specific
- Notify the district labour office within five working days when using the objective-reasons exclusion
- Update work permit documentation promptly when a contract converts to indefinite duration
The cost of non-compliance is not only legal. A PIP audit finding triggers a fine of up to PLN 30,000 per violation. Converted contracts that are then terminated without proper justification generate Labour Court claims. The reputational consequence – particularly for employers competing for skilled workers – is harder to quantify but equally real.
Frequently asked questions
Q: Does a gap between two fixed-term contracts reset the 33-month count?
A: Not automatically. Polish employment law does not specify a minimum gap that resets the count. The National Labour Inspectorate examines whether the contracts form part of a continuous employment relationship in substance. A gap of a few days or weeks will not break the chain. Even longer gaps may be disregarded if the same role, the same duties, and the same employer are involved. Employers should not rely on short breaks as a compliance strategy without specific legal advice.
Q: How long does it take to convert a fixed-term contract to indefinite duration voluntarily, and what does it cost?
A: Voluntary conversion requires a written agreement signed by both parties. It takes effect on the date stated in the agreement. There is no statutory filing requirement and no registration fee. The practical cost is the time needed to draft the agreement and update internal HR records. If the employer has a collective bargaining agreement or works council, the conversion terms may need to be notified to the works council at least seven days in advance.
Q: Is it a common misconception that a fixed-term contract automatically expires without any employer action?
A: Yes, and it is one of the most consequential misconceptions in Polish employment practice. A fixed-term contract that has converted to an indefinite-duration contract under the 33-month rule does not expire on its stated end date. The stated end date is legally irrelevant once conversion has occurred. If the employer simply stops paying salary on the original end date, treating the contract as expired, the employee may claim wrongful termination and seek compensation or reinstatement before the Labour Court. The employer must terminate the contract following the standard procedure for indefinite contracts – written notice, specific reason, and the applicable notice period.
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 employment compliance, workforce restructuring, and cross-border mobility. 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.