A detailed legal guide to sick leave and medical documentation in Turkey, covering medical reports, temporary incapacity benefits, employer duties, dismissal risks, occupational health, employee privacy, and HR compliance.
Sick leave is often treated as a simple attendance problem. In practice, it is one of the most legally sensitive areas of HR management because it sits at the intersection of labour law, social security law, occupational health and safety, privacy law, and dismissal law. In Turkey, the legal handling of employee illness is not built around a single “sick leave code.” Instead, the system is spread across Labour Act No. 4857, Social Insurance and General Health Insurance Law No. 5510 as implemented by the Social Security Institution, Occupational Health and Safety Law No. 6331, the Personal Data Protection Law No. 6698, and the Labour Courts Act No. 7036. For HR teams, that means a medical report is never only a medical report. It may affect pay, benefit eligibility, recordkeeping, return-to-work processes, dismissal timing, and the handling of sensitive health data all at once. (natlex.ilo.org)
The basic compliance challenge is that Turkish law distinguishes between several different questions that employers often collapse into one. First, is the employee absent on the basis of an authorized medical rest report. Second, does the employee qualify for temporary incapacity benefit from SGK. Third, what information may the employer lawfully collect and retain about the illness. Fourth, when does repeated or prolonged absence become a legitimate ground for termination. Fifth, what occupational health and safety duties arise at recruitment, during absence, and on return to work. A lawful HR response requires all of those questions to be kept separate and answered in the right order. (Sosyal Güvenlik Kurumu)
The legal framework of sick leave in Turkey
Labour Act No. 4857 regulates the employment relationship generally and contains the main rules on termination, personnel files, equality, and certain protected absences, including maternity-related leave in Article 74. The same Act also gives both employees and employers specific health-based termination rights under Articles 24 and 25. Social security income support during temporary incapacity is handled through SGK’s sickness-insurance framework, which explains when a medically certified employee may receive temporary incapacity benefit, in what amount, and under what contribution conditions. Occupational Health and Safety Law No. 6331 adds the employer’s obligations on health surveillance, risk assessment, and return-to-work examinations in relevant cases. KVKK then governs how health reports and medical details may be processed, because personal health data are special category data under Turkish law. (natlex.ilo.org)
This structure matters because Turkish law does not treat “being ill” as automatically creating one single employer obligation. In some situations, the main issue is income replacement through SGK. In others, the main issue is whether the employee’s prolonged absence now meets a dismissal threshold. In others, the main risk is that the employer collected far more medical information than necessary and mishandled special category data. HR therefore needs a system, not a reflex. The right answer to sickness absence depends on duration, documentation, employment status, social security history, and the actual reason the employer wants or needs the information. (Sosyal Güvenlik Kurumu)
What “sick leave” usually means in practice
In Turkish HR practice, sick leave usually starts with an authorized medical rest report. SGK states that temporary incapacity during sickness exists when the insured person is temporarily unable to work for the rest period indicated in a report issued by a physician or health board authorized by the Institution. That is a critical starting point for employers: lawful sickness absence is ordinarily documented through an official medical report, not merely through an employee’s informal message saying they feel unwell. (Sosyal Güvenlik Kurumu)
At the same time, the employer does not receive unlimited rights over the employee’s medical information just because a report exists. Turkish law distinguishes between proof of incapacity and unnecessary disclosure of diagnosis-level details. For HR, the safer operational approach is to collect what is necessary to administer absence, payroll, social security, and workplace safety, while avoiding a culture of demanding unnecessary medical detail from employees or supervisors. That approach is not just privacy-friendly. It reflects the legal logic of both KVKK and the Turkish Code of Obligations, which tie employer use of employee data to necessity and lawful purpose.
Temporary incapacity benefit and SGK rules
One of the most important distinctions in Turkey is the difference between employer-administered absence and SGK-administered temporary incapacity benefit. SGK states that, in cases of sickness, temporary incapacity benefit is paid where the employee has obtained a rest report from a physician or health board authorized by the Institution, and the payment begins from the third day of incapacity. SGK also states that the benefit is calculated at one-half of daily earnings for inpatient treatment and two-thirds of daily earnings for outpatient treatment. (Sosyal Güvenlik Kurumu)
SGK also sets eligibility conditions. According to the Institution, to receive sickness-based temporary incapacity benefit, the employee must still have insured status on the date the rest period begins, must have at least 90 days of short-term insurance premiums reported in the previous one year, and must have an authorized rest report. SGK further explains that, in sickness cases, insured status is generally treated as ending from the tenth day after the contract ends in ordinary termination situations, and that reports obtained after insured status has ended do not generate sickness-based temporary incapacity benefit. For HR teams, this means the timing of termination and the timing of the medical report can materially affect benefit eligibility. (Sosyal Güvenlik Kurumu)
There is another practical point for employers handling payroll and SGK reporting. SGK explains that, for 4/a insured employees, temporary incapacity benefit processes are run electronically through the e-benefit system, and employers still have a duty to notify the Institution electronically whether the employee worked during the report period. However, SGK also states that payment to the employee is not conditioned on the employer’s “did not work” notification being filed, although the Institution may still process the matter if the deadline passes and other reporting conditions are met. This is a useful HR compliance point: the employer’s reporting duty remains important even if the employee’s entitlement is not made strictly dependent on that specific filing. (Sosyal Güvenlik Kurumu)
SGK also notes that employees under 4/b status are not granted temporary incapacity benefit from the sickness-insurance branch under Law No. 5510. That detail matters in mixed workforces, family companies, and owner-manager structures where HR may incorrectly assume the same sickness-benefit rules apply to everyone connected with the business. (Sosyal Güvenlik Kurumu)
Sick leave is not the same as annual leave or ordinary paid time off
Turkish labour law treats sickness absence separately from annual leave. Article 55 of Labour Act No. 4857 includes certain illness-related periods among the periods counted as worked for purposes of annual leave entitlement, within statutory limits, which shows that illness and annual leave are legally distinct categories. More broadly, the annual leave framework is built on a non-waivable rest right, while sickness absence is tied to medical incapacity and, where conditions are met, SGK benefit. HR should therefore not reclassify sickness absence as annual leave simply for convenience. That would distort both the annual leave balance and the legal meaning of the absence. (natlex.ilo.org)
This distinction becomes especially important in payroll disputes. If an employee is on an authorized medical report, the employer should first determine whether the absence is being handled through contract, policy, collective agreement, or SGK benefit rules, rather than simply subtracting annual leave days or forcing use of paid time off. A clean classification protects both the employer and the employee. (Sosyal Güvenlik Kurumu)
Medical documentation and the limits of employer access
Medical documentation is necessary in HR management, but only within legal limits. Article 75 of the Labour Act requires the employer to create a personnel file for each employee, to keep the documents and records required by labour law and other legislation, and to present them to competent authorities when requested. The same article also requires the employer to use information obtained about the employee lawfully and in accordance with honesty, and not to disclose information that the employee has a justified interest in keeping secret. In other words, the personnel file obligation does not create a license for unlimited medical collection. It creates a duty to keep required records while respecting confidentiality.
The Turkish Code of Obligations strengthens this further. Article 419 states that the employer may use the employee’s personal data only to the extent necessary for the employee’s suitability for work or for the performance of the service contract, subject to special laws. In sick-leave management, that means employers should collect what is necessary to verify incapacity, comply with SGK and OHS duties, administer payroll, and manage return-to-work decisions. They should not collect or circulate diagnosis details beyond what is genuinely necessary for those purposes. (Çalışma ve Sosyal Güvenlik Bakanlığı)
Health data are special category data under KVKK
From a privacy perspective, personal health data are among the most sensitive categories of employee information. KVKK’s official guidance explains that personal health data include all information relating to a natural person’s physical and mental health and the health services provided to that person, and that these data are listed among the special category personal data in Article 6 of the Law. The same guidance states that personal health data cannot be processed on the basis of legitimate interest and that special category processing is in principle prohibited unless one of the statutory conditions exists.
KVKK’s official publication also summarizes the relevant lawful grounds. Special category data may be processed, among other cases, where the data subject has given explicit consent, where processing is expressly provided by law, where it is necessary for the establishment, exercise, or protection of a right, where it is necessary for certain health-service purposes under confidentiality, or where it is necessary to fulfil legal obligations in the fields of employment, occupational health and safety, social security, social services, and social assistance. For HR departments, that means the lawful basis for processing a sick report or return-to-work medical document will often be legal obligation, rights protection, or employment/OHS necessity rather than legitimate interest.
This has an immediate practical consequence. HR should not treat medical reports like ordinary attendance documents. Access should be restricted, disclosure should be need-based, and the employer should think carefully before asking managers to retain or forward medical information. The more sensitive the data, the stronger the internal access controls should be. That is not only prudent management. It is the natural consequence of KVKK’s special-category regime and the confidentiality logic in Article 75 of the Labour Act.
Occupational health, health surveillance, and return to work
Sick leave is not only a payroll and privacy issue. It is also an occupational health issue. Article 10 of Law No. 6331 requires the employer to conduct a health-and-safety risk assessment, taking into account workers who may be affected by risks, including pregnant and breastfeeding workers and other workers requiring specific policies. Article 15 then requires the employer to ensure health surveillance appropriate to the workplace risks and specifically states that a health examination is required before assignment, after job change, and on return to work following repetitive absence due to occupational accidents, occupational diseases, or health problems, upon request.
This is highly relevant for HR. It means that long or repeated sickness absence may trigger more than an attendance review. In the right circumstances, it may require the employer to coordinate with occupational health functions on whether return-to-work health surveillance is needed, whether the employee can safely resume the same role, and whether any adjustment or redeployment question should be considered. Article 15 also states that workers may not be employed in hazardous or very hazardous jobs without the required health report. That is especially important where an employee returns from illness into a role carrying significant safety exposure.
Article 17 of Law No. 6331 adds that the employer must ensure that each worker receives adequate health and safety training on recruitment, on transfer, on job change, and when equipment or technology changes. In a return-to-work context, this reinforces the employer’s duty to reassess whether the employee needs updated information or training, particularly if the illness, the work process, or the workstation conditions have changed.
When illness can justify termination by the employer
One of the most important HR questions is when sickness absence crosses from lawful absence into a lawful ground for termination. Article 25 of Labour Act No. 4857 gives the employer a right of summary termination in limited health-related situations. Under Article 25/I(a), if the employee contracts a disease or suffers an injury due to their own deliberate act, loose living, or drunkenness, and is absent for three successive working days or for more than five working days in any month, the employer may terminate. More importantly for ordinary sickness cases, Article 25/I(b) states that if illness or accident not attributable to the employee’s fault continues for more than six weeks beyond the notice periods in Article 17, the employer may terminate; in pregnancy or confinement cases, that period begins after the statutory maternity period in Article 74. (natlex.ilo.org)
This means Turkish law does not permit summary dismissal for every medically documented absence. The trigger is much narrower. In ordinary, non-fault illness cases, the employer generally reaches the Article 25 threshold only when recovery does not occur for a period extending beyond the applicable notice period plus six weeks. For HR, this requires a careful timeline analysis. The employer should not confuse ordinary short-term sickness absence with the much longer absence threshold that Article 25 contemplates. (natlex.ilo.org)
It is also important that Article 25 is a just-cause route, not the only possible route. Even where Article 25 is not available, prolonged incapacity may still have operational consequences that need to be assessed under the broader framework of Labour Act No. 4857, including notice-based termination and the job-security regime where applicable. But the employer should not use Article 25 casually. It is a narrow and serious mechanism. (natlex.ilo.org)
Employee health rights against the employer
Turkish law also protects employees where the workplace itself creates a health risk. Article 24 of Labour Act No. 4857 gives the employee a right to terminate the contract for just cause if the performance of the work endangers the employee’s health or life for a reason impossible to foresee when the contract was concluded. It also gives the employee the same right if the employer, the employer’s representative, or another employee in close and constant contact is suffering from an infectious disease or a disease incompatible with the performance of the work. For HR, this means sickness-related legal risk runs in both directions. Employers do not only manage sick employees; they also have duties not to expose healthy employees to unlawful health risks at work. (natlex.ilo.org)
This is especially important in communicable-illness settings, shared workspaces, food-related work, healthcare, and other environments where the health status of one worker can affect others directly. A lawful HR response to sickness therefore includes not only absence management, but also workplace risk management, confidentiality-balanced communication, and protective measures for colleagues where required. (natlex.ilo.org)
Dismissal disputes and mediation
If a sickness-related termination leads to a dispute, the Labour Courts Act adds another procedural layer. Article 3 of Law No. 7036 states that, in claims for employee or employer receivables, compensation, and reinstatement arising from law or labour contracts, applying to a mediator is a condition of action before filing suit. If mediation is skipped, the case is procedurally dismissed. For HR, that means a sickness-dismissal file should be prepared as though it will first be reviewed in mediation and only then in court. (Adalet Bakanlığı)
This is one reason documentation matters so much. If the employer relies on prolonged medical absence, it should be able to show the report history, the relevant notice period, the six-week extension period, the date calculations, any workplace-health steps taken, and the reason why the chosen termination route was legally appropriate. Without that discipline, a sickness-related dismissal can become much harder to defend than the employer expects. (natlex.ilo.org)
What HR should do in practice
A sound HR system for sickness absence in Turkey usually begins with four disciplines. First, verify absence through authorized medical documentation where required, and coordinate properly with SGK workflows. Second, classify the issue correctly: short-term reported illness, prolonged incapacity, occupational-health follow-up, or possible termination threshold case. Third, restrict medical-data access and treat health records as special category data under KVKK. Fourth, link absence management with occupational-health obligations, especially where repeated absence, return-to-work questions, or hazardous roles are involved. (Sosyal Güvenlik Kurumu)
HR should also train managers not to improvise. Supervisors should not demand diagnosis details, discourage legitimate sickness absence, or threaten termination without checking the legal thresholds first. They should know when to refer the matter to HR, payroll, occupational health, or legal counsel. The biggest risk in this area is not always the law itself. It is inconsistent informal handling by line managers who treat sickness as a discipline issue one day, a payroll issue the next, and a privacy-free topic the day after that.
Conclusion
In Turkey, sick leave and medical documentation are governed by a multi-layered legal system. SGK ties temporary incapacity benefit to authorized medical reports, insured status, and contribution conditions, with sickness payments generally beginning from the third day and calculated differently for inpatient and outpatient treatment. Labour Act No. 4857 protects personnel-file confidentiality, gives employees health-based termination rights in some situations, and gives employers a limited right to terminate for prolonged illness when statutory thresholds are met. Law No. 6331 adds health-surveillance and return-to-work duties, while KVKK treats health data as special category data that cannot be processed on a simple legitimate-interest theory. Disputes over these issues generally go first to mandatory mediation under Law No. 7036. (Sosyal Güvenlik Kurumu)
For HR teams, the safest approach is to stop seeing sick leave as a minor absence code and start seeing it as a structured compliance process. A lawful system separates medical proof from unnecessary diagnosis collection, SGK benefit handling from employer wage issues, occupational-health review from ordinary scheduling, and genuine prolonged incapacity from ordinary short-term illness. When those lines are kept clear, employers are far better positioned to manage illness lawfully, protect employee privacy, and avoid preventable disputes. (Sosyal Güvenlik Kurumu)
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