Sick leave (commonly known as "L4", formally e-ZLA) is one of the most frequently used – and most mythologized – employee rights. Is it allowed to go to the store? Can you travel? Does ZUS "monitor Facebook"? When can an employer dismiss an employee on sick leave? This guide answers the most common questions about L4 based on regulations and case law, not forum legends – with current amounts and rules for 2026 – taking into account the significant reform of L4 inspections that came into effect on April 13, 2026.
Last verification: July 21, 2026 (sickness benefit act – consolidated text Dz.U. 2026 poz. 854, Labor Code – consolidated text Dz.U. 2025 poz. 277, reform – Dz.U. 2026 poz. 26). Informational material – not legal advice. For individual matters, confirm the situation with ZUS (helpline 22 560 16 00) or with a labor law attorney.
In Brief
Key Principles
- e-ZLA is automatically sent to ZUS and the employer – you do not need to deliver anything. You only need to inform your employer about your absence according to the regulations (usually by the 2nd day).
- The first 33 days (14 for employees over 50) of illness in the year are paid by the employer (sick pay, 80%; 100% in cases such as pregnancy and accidents on the way to work – art. 92 KP), after that, the benefit comes from ZUS. The announced reform "sick pay from the 1st day paid by ZUS" has not been implemented – the government withdrew from the project; in 2026, the old model applies.
- Code "2" (the sick person can walk) allows for ordinary life activities: pharmacy, basic shopping, doctor visits. It is not allowed: to work for pay or do anything that hinders recovery (art. 17 of the sickness benefit act) – otherwise, you lose the benefit for the entire period of leave.
- Inspections can be conducted by ZUS and the employer (the latter if they report more than 20 insured persons). Absence at the address provided in e-ZLA = a call for explanations; you must inform about a change of residence during L4 within 3 days.
- A summons for examination by a ZUS medical expert is mandatory – failure to appear without justification invalidates the leave from the day after the examination date.
- You cannot be dismissed while on L4 (art. 41 KP) – but the protection has time limits (art. 53 KP) and does not protect against disciplinary action for abuse of leave.
- Benefit period: 182 days (270 days for pregnancy and tuberculosis). After that: rehabilitation benefit (up to 12 months) or pension.
- From ZUS's decision on the loss of benefits, you can appeal to the court for free – and people regularly win these cases.
How L4 Works Formally
Who Pays and How Much
For the first 33 days of incapacity in the calendar year (14 days for an employee who is over 50), you receive sick pay from the employer: 80% of the base, and 100% in cases such as during pregnancy, after an accident on the way to/from work, and for donor examinations (art. 92 KP). From the 34th (15th) day – sick benefit: it is paid by ZUS, and for employers reporting more than 20 insured persons – by the employer themselves (art. 61 of the sickness benefit act). The benefit is generally 80% of the base (average from 12 months), also for days off; 100% – pregnancy, accident on the way, donors. Hospital stay is also 80% – the previous 70% was abolished in 2022. An accident at work and occupational disease have a separate regime: 100% from accident insurance from the first day, without a waiting period. The loud announcement that "from 2026 sick pay from the first day will be taken over by ZUS" has not been passed – the project has been postponed and art. 92 KP remains unchanged.
How Long Can You Be Sick
Maximum 182 days (for tuberculosis and pregnancy – 270 days) – art. 8 of the sickness benefit act. Previous periods of incapacity are included in one benefit period if the break between them did not exceed 60 days – regardless of whether it is the same illness (art. 9; exception: incapacity during pregnancy after a break counts anew). After exhausting the limit, if further treatment indicates a return to work, you may receive rehabilitation benefit – up to 12 months: 90% of the base for the first 3 months, then 75% (100% during pregnancy); determined by a ZUS medical expert. After that, you remain eligible for a disability pension.
Waiting Period – When is the Benefit Due
The benefit is due after the so-called waiting period (art. 4 of the sickness benefit act): 30 days of continuous insurance with an employment contract, 90 days with voluntary insurance (contract, business activity). Previous insurance periods are counted if the break is up to 30 days. Without a waiting period (from day 1): graduates of schools and universities (if they join insurance within 90 days of graduation), persons with at least 10 years of previous mandatory sickness insurance, and incapacity due to an accident on the way to/from work.
60 Questions? Here are the Ones That Really Matter
Advertisements for e-books promise "60 questions about L4". The truth is simpler: most of them are variations of a dozen key issues. Below are all the important ones – grouped so you can find the answer in 30 seconds.
What is Allowed and What is Not on L4
Code "1" and Code "2" – What Do They Mean
The doctor indicates in e-ZLA: "1 – the sick person should lie down" or "2 – the sick person can walk" (art. 55 sec. 3 of the sickness benefit act). Code 2 does not mean "do whatever you want" – it means that leaving the house for ordinary activities does not violate the purpose of the leave. From April 13, 2026, the boundaries are finally explicitly stated in the law (art. 17 sec. 1a–1b, Dz.U. 2026 poz. 26): sanctions do NOT cover ordinary daily activities or incidental activities required by significant circumstances – with the law explicitly stating that "significant circumstance" does not include an employer's order. This statutory adoption reflects the long-standing line of the Supreme Court.
List: Safe vs Risky
| Situation | Assessment |
|---|---|
| Going to the pharmacy, for basic shopping, to a doctor/rehabilitation (code 2) | Safe – ordinary daily activities |
| Walk recommended by the doctor (e.g., for spine problems, depression) | Safe – best to have a recommendation in documentation |
| Staying with family who is caring for you (address listed in e-ZLA) | Safe – provided the address matches |
| Going "on vacation" during L4 | Risky – no regulation prohibits travel, but the trip must not hinder treatment, and you must report a change of residence to the payer and ZUS within 3 days (art. 59 sec. 5e). Failure to report = a summons for examination sent to the old address is considered delivered, and failure to appear invalidates the leave. A recreational trip "for recovery" while on leave for a broken leg may be considered compliant with the purpose; skiing while on leave for spine issues – not |
| Paid work for another employer / on a contract / in your own company | Loss of benefit – art. 17 sec. 1 of the sickness benefit act: any paid work during L4 (regardless of the basis – employment, contract, own business) = loss of benefit for the entire period of leave. From April 13, 2026, leave is issued separately for each title – L4 from employment while simultaneously working on a contract for another payer, for which you also have leave, still means loss |
| Occasional formal activities in a sole proprietorship (signing an invoice, document) | Usually safe – incidental activities forced by circumstances have been explicitly excluded by law since April 13, 2026 (art. 17 sec. 1a), which confirms earlier case law of the Supreme Court (judgments II UK 186/11 and II UK 359/08: occasional formal activities of an entrepreneur are not paid work). Regularly running a business – loss |
| Renovating an apartment, physical work, partying until morning | Risky/loss – activities contrary to the purpose of the leave |
| Activity on social media | ZUS does not have a statutory right to "monitor" profiles – but public posts can end up in inspection records as evidence (e.g., after a report) and undermine compliance with the purpose of the leave. Common sense: posting from a wedding while on L4 "should lie down" is asking for trouble |
Inspections: Who, When, and How
Two Types of Inspections
There are two independent procedures – both underwent significant reform in 2026:
- Medical assessment inspection (art. 59 of the sickness benefit act, new wording from January 27, 2026): a ZUS medical expert checks whether you are still unfit for work. ZUS can summon you for an examination (also at your place of residence), order auxiliary examinations, and request documentation. New: they can also notify you by phone or email.
- Inspection of proper use (art. 68–68f, from April 13, 2026): checks whether you are not working and not acting against the purpose of the leave. It is conducted by ZUS, as well as the employer: paying benefits (over 20 insured persons) – towards their employees, and any employer – during the sick pay period from art. 92 KP. The old regulation from 1999 on inspections has been repealed – the procedure is now in the law: the inspector must have written authorization, the inspection must be proportional and respect privacy, and a protocol is drawn up from the inspection, to which you can raise objections within 7 days, and doubts are resolved by ZUS.
You Were Not Home – What Now
Simply being absent during the inspection of use does not automatically revoke the benefit – the inspector prepares a protocol, and you have the right to explain your absence (doctor's visit, pharmacy, rehabilitation – these are normal justifications; keep confirmations). A more serious issue is playing with addresses: in e-ZLA, you provide the residence address, and you must inform the payer and ZUS of any change during the leave within 3 days (art. 59 sec. 5e). If you do not do this, a summons sent to the old address is considered effectively delivered (sec. 5f) – and "failure to appear" results in the invalidation of the leave and a decision on the lack of entitlement to benefits.
Summons for Examination by a Medical Expert
A summons for examination is mandatory. Failure to appear or preventing the examination = the leave loses validity from the day following the designated date (art. 59 sec. 6), ZUS issues a decision on the lack of entitlement to benefits and notifies the employer. If you cannot attend (e.g., you are bedridden), inform ZUS – the examination can take place at your residence. ZUS reimburses travel costs for the examination. Your employer can also request a medical assessment inspection.
Employer and Your L4
Can They Dismiss You While on L4?
During justified absence, the employer cannot issue a dismissal (art. 41 KP; exception: bankruptcy or liquidation of the company). However, the protection is not eternal – after the periods specified in art. 53 § 1 KP, the employer can terminate the contract without notice, without employee fault: if incapacity lasts longer than 3 months (employment with this employer shorter than 6 months) or longer than the total period of receiving sick pay and benefits plus the first 3 months of rehabilitation benefits (employment of at least 6 months or an accident at work). If you return to work before these periods expire, termination in this manner is inadmissible, and the dismissed employee who reports within 6 months should be offered work again as far as possible. Note: protection under art. 41 KP does not protect against disciplinary action (art. 52 KP) for serious abuse of leave – the Supreme Court confirms that work or activities that negate the purpose of L4 can justify this (judgments II PK 14/16, I PK 208/02), although not automatically.
Employer Challenges the Leave
The employer cannot "invalidate" e-ZLA themselves – they can: request a medical assessment inspection from ZUS (art. 59 sec. 12), conduct a proper use inspection (as described above), and suspend payment only based on the findings of the inspection/decision. If the employer unjustifiably withholds sick pay or benefits – file a complaint with PIP (pip.gov.pl), request ZUS to determine entitlement to benefits, and ultimately go to the labor court (appeals and employee lawsuits are exempt from court fees).
L4 and Abroad
Illness during a stay in the EU/EFTA: the benefit is paid by the country where you are insured, regardless of your location (art. 21 of regulation 883/2004) – ZUS will also transfer the benefit to a foreign account. Foreign medical certificates are accepted: a document from the healthcare facility or the doctor's name, date of issue, signature, and period of incapacity is sufficient; issued in the official languages of the EU/EFTA does not require translation (regulation on documents for benefits, consolidated text Dz.U. 2026 poz. 890). While abroad, you are also subject to inspection – ZUS may order an examination by the institution in the country of residence. Remember: EKUZ is only for treatment, not cash benefits. Conversely, for the Polish diaspora working abroad: you apply for sick benefits in the country where you are insured (e.g., in the USA – according to their rules), not in ZUS.
ZUS Took Your Benefit – How to Appeal
Read the Decision and Deadline
You can appeal to the court within a month of delivery from ZUS's decision (e.g., on the lack of entitlement to benefits after inspection) (art. 477⁹ KPC). With a medical expert's ruling on rehabilitation benefits, you first have a protest to the ZUS medical commission within 14 days.
Submit an Appeal via ZUS
In writing to the branch that issued the decision (or orally for the record). Indicate the decision number, what you are demanding, and why (evidence: medical documentation, confirmations of visits, witnesses). ZUS can change the decision itself within 30 days – if not, it forwards the case to the court.
Court – Free of Charge
Social insurance cases are exempt from court fees for the appellant (art. 96 of the social insurance act). The court appoints expert doctors – they, not the ZUS expert, decide. Appeals against benefit decisions are regularly upheld, especially in cases of "incidental" activities deemed work by ZUS.
FAQ – Quick Answers
Do I have to deliver L4 to my employer?
No – e-ZLA is automatically sent to ZUS and the payer's profile, at the latest the next day. However, you must inform about your absence immediately, no later than the 2nd day, in the manner accepted in the company (phone, email).
Can a doctor issue L4 retroactively?
Up to 3 days retroactively before the examination date (if the examination confirms previous incapacity); psychiatrists can go further – in cases of disorders limiting the ability to assess one's own behavior (§ 7 of the regulation from November 10, 2015).
Can I pick up my child from school or do shopping while on L4?
If indicated "can walk" – yes, ordinary daily activities are explicitly excluded from sanctions since April 13, 2026 (art. 17 sec. 1b). If "should lie down," limit outings to necessary ones (doctor, pharmacy).
My boss calls for me to "just reply to one email" – can I?
Cautiously: incidental activities forced by significant circumstances are allowed, but the law explicitly states that an employer's order is not such a circumstance (art. 17 sec. 1a). Working "because the boss asked" can cost you the entire benefit.
Can ZUS inspect a one-day L4?
They can inspect any – in practice, they target longer and frequent leaves, leaves around weekends/vacations, and after reports. Short L4 can also be checked for "recidivists".
What are the consequences of working while on L4?
Loss of benefits for the entire period of leave + return of received amounts with interest (art. 17 and 66 of the sickness benefit act), and in extreme cases, disciplinary action. A forged certificate = loss of entitlement to benefits and criminal liability.
Can I shorten L4 and return earlier?
Formally, the leave covers the indicated period; returning early requires a certificate of regained capacity (for leaves longer than 30 days – control examinations in occupational medicine before admission, art. 229 KP).
Does the period of L4 count towards vacation and seniority?
Seniority continues normally. Vacation cannot be granted or started during L4 – illness interrupts vacation (art. 165–166 KP).
Fact-Check Summary
Definitely true: verified in consolidated texts and amending acts (sickness benefit act – Dz.U. 2026 poz. 854; Labor Code – Dz.U. 2025 poz. 277; reform – Dz.U. 2026 poz. 26; regulation on documents – Dz.U. 2026 poz. 890): 33/14 days of sick pay 80% and cases of 100% (art. 92 KP); benefit 80%, hospital also 80% since 2022 (art. 11); benefit period 182/270 days and counting with a break of up to 60 days (art. 8–9); rehabilitation benefit 12 months, 90/75/100% (art. 18–19); waiting period 30/90 days (art. 4); e-ZLA automatically to ZUS and the payer, information about absence no later than the 2nd day; issuance up to 3 days retroactively, psychiatrist longer; loss of benefits for the entire period for paid work or acting against the purpose (art. 17), with statutory exclusions for daily life activities and incidental activities from April 13, 2026 (art. 17 sec. 1a–1b); medical assessment inspection with a sanction of loss of validity from the day after the examination date (art. 59), obligation to report a change of residence within 3 days (art. 59 sec. 5e–5f); new statutory procedure for inspections of use from April 13, 2026 (art. 68–68f), repeal of the 1999 regulation; protection from art. 41 KP and limits from art. 53 KP; protest within 14 days, appeal to court within a month, free of charge (art. 96 of the social insurance act); EU coordination – benefits paid abroad, foreign certificates without translation (EU/EFTA); the reform "ZUS pays from day 1" NOT passed
Probably true (case law/practice): the Supreme Court line on incidental and formal activities of entrepreneurs (II UK 186/11, II UK 359/08 – now codified); disciplinary action for abuse of L4 is possible but exceptional (II PK 14/16, I PK 208/02); a wedding while on L4 "can walk" is not automatically a serious violation (I PKN 14/98); practice of targeting leaves for inspection and high success rate of appeals in cases of "incidental" activities – experience from case law, not regulation
Sources
| Source | Type | Status |
|---|---|---|
| Sickness Benefit Act – consolidated text Dz.U. 2026 poz. 854 | Act | Official |
| Labor Code – consolidated text Dz.U. 2025 poz. 277 | Act | Official |
| L4 Reform – Act of December 18, 2025 (Dz.U. 2026 poz. 26) | Act | Official |
| ZUS – Changes in Sick Leave Inspections from April 13, 2026 | ZUS | Official |
| ZUS – Sick Benefit | ZUS | Official |
| ZUS – e-ZLA | ZUS | Official |
| ZUS – Rehabilitation Benefit | ZUS | Official |
| ZUS – Benefits for Residents Abroad | ZUS | Official |
| MRPiPS – L4 Reform Signed by the President | gov.pl | Official |
| National Labor Inspectorate | PIP | Official |
| EKUZ – pacjent.gov.pl | gov.pl | Official |
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