Employing personnel in Turkey creates extensive record-keeping, payroll, social security and reporting obligations.
Employers must not only register employees and pay social security contributions to the Social Security Institution (Sosyal Güvenlik Kurumu – SGK). They must also retain employment and payroll records, produce documentation during inspections, correctly declare employees’ contribution days and earnings, and respond to requests for information from SGK.
These obligations can continue long after the payroll period concerned.
Social security liabilities can also become particularly important during corporate acquisitions, mergers and workplace transfers because historical SGK debts can potentially follow the business.
For international companies operating in Turkey, SGK compliance should therefore be considered part of both payroll administration and corporate risk management.
This guide examines important employer obligations under Social Insurance and General Health Insurance Law No. 5510.
How Long Must Employers Keep SGK Records in Turkey?
Employers are required to retain workplace books, payroll records and supporting documents for statutory periods.
The retention period generally begins from the start of the year following the year to which the records relate.
For private-sector workplaces, the applicable retention period is generally:
10 years.
This means that employers should not dispose of payroll and social security records merely because the relevant employee has left the company.
Record Retention for Public Authorities
Different retention periods apply to public administrations.
Public-sector organizations subject to the relevant provisions are generally required to retain applicable workplace records for:
30 years.
This significantly longer period reflects the specific statutory framework applicable to public administration records.
Record Retention During Liquidation or Bankruptcy
Officials responsible for liquidation or bankruptcy administration are required to retain relevant workplace records during the period in which they perform their duties.
Record-retention obligations therefore remain important even where a business has ceased ordinary operations.
Which Records Should Employers Retain?
A compliant employer should maintain organized records relating to employment and social security declarations.
Depending on the company and workforce, these can include:
- employment agreements;
- payroll records;
- salary calculations;
- bank salary-payment evidence;
- SGK employee commencement notifications;
- SGK termination notifications;
- monthly social security declarations;
- contribution calculations;
- attendance records;
- overtime records;
- annual leave records;
- medical and absence documentation;
- bonus and commission records;
- expense documentation;
- employee benefit records; and
- accounting records supporting payroll declarations.
Electronic recordkeeping can be useful, but employers should ensure that documents remain accessible throughout the applicable statutory retention period.
How Quickly Must Records Be Produced During an SGK Inspection?
Where authorized SGK inspection or control personnel request the employer’s books, records and supporting documentation, the employer is generally required to provide them within:
15 days.
Employers should therefore maintain records in a form that can be retrieved promptly.
A ten-year retention policy is of limited practical value if historical payroll documentation cannot be located when SGK requests it.
Why the 15-Day Deadline Matters
During an SGK inspection, employers may need to retrieve documents relating to former employees or historical payroll periods.
International businesses should therefore avoid storing Turkish payroll information only in:
- former employees’ email accounts;
- inaccessible legacy systems;
- local computers;
- discontinued payroll software; or
- systems controlled exclusively by former service providers.
A centralized archive can significantly reduce compliance risks.
Can SGK Recognize Unregistered Employment Without Payroll Records?
Yes.
SGK inspection personnel can make factual findings concerning individuals who were actually working at a workplace even where ordinary employment records are missing.
This is particularly important in cases involving:
- unregistered employees;
- underreported employment;
- undeclared working periods; or
- underreported earnings subject to social security contributions.
Physical inspection findings and other official investigations can therefore affect an individual’s SGK history.
Retrospective Service Based on Factual Findings
Where SGK’s authorized inspection personnel physically determine that an individual is working at a workplace and discover that the person’s:
- insured service periods; or
- earnings subject to contributions
were not reported or were underreported, retrospective adjustments can be made under the applicable statutory rules.
Where the determination is not supported by ordinary workplace records and documents, the retrospective period recognized through this specific factual-determination mechanism is generally limited.
One-Year Limit for Certain Record-Free Findings
Under Article 86 of Law No. 5510, where unreported or underreported work is established through qualifying factual inspection findings without supporting records and documentation, SGK can generally recognize up to:
1 year retrospectively from the date of the determination
under this particular mechanism.
This can concern both:
- service periods; and
- earnings subject to social security contributions.
The rule should not be interpreted as meaning that employers can never face liabilities extending beyond one year through other legal mechanisms.
Unregistered Employees and Employment Court Claims
Employees whose work was not properly reported to SGK have an additional legal mechanism available.
Where the employer failed to submit the required premium and service declarations and the employment was not otherwise identified by SGK, the employee can potentially bring a service determination action (hizmet tespiti davası) before the competent labor court.
Five-Year Period for Service Determination Actions
Under Article 86 of Law No. 5510, qualifying employees can generally bring the relevant court action within:
5 years
starting from the end of the year in which the unreported work was performed.
Where the employee successfully proves the employment relationship, the service periods and earnings identified by the final court decision can be taken into account for social security purposes.
Why Unregistered Employment Is a Long-Term Risk
An employee leaving a business does not necessarily eliminate the risk associated with historical non-registration.
Potential consequences can arise years later through:
- SGK inspections;
- employee litigation;
- payroll audits;
- due diligence;
- workplace transfers; or
- corporate transactions.
Employers should therefore correct classification and registration issues as early as possible.
What Happens to SGK Debts When a Workplace Is Transferred?
SGK liabilities are particularly important during business acquisitions.
Where a workplace employing insured persons is transferred together with its assets and liabilities, passes to another party, merges with another workplace, or is otherwise transferred within the statutory framework, historical SGK debts can affect the new employer.
Successor Liability for SGK Debts
The new employer can become jointly and severally liable with the previous employer for qualifying historical SGK debts.
These liabilities can include:
- unpaid social security contributions;
- late-payment penalties;
- late-payment interest; and
- related statutory amounts.
This makes SGK due diligence particularly important before acquiring an existing Turkish business or workplace.
Can a Purchase Agreement Exclude Historical SGK Liability?
The buyer and seller may contractually agree between themselves how historical liabilities will ultimately be allocated.
However, contractual clauses attempting to eliminate statutory successor liability are not necessarily enforceable against SGK.
In other words, a contractual statement saying that “all historical SGK debts remain with the seller” does not automatically prevent SGK from exercising statutory rights against the new employer.
The buyer may have contractual recourse against the seller, but this is a separate issue from SGK’s statutory collection rights.
SGK Due Diligence Before an Acquisition
Before acquiring a Turkish company or workplace, a buyer should consider reviewing:
- historical SGK contribution payments;
- payroll declarations;
- employee registration dates;
- salary levels reported to SGK;
- administrative fines;
- pending inspections;
- disputed SGK assessments;
- unregistered workers;
- workplace registration records;
- incentive compliance; and
- outstanding contribution debts.
Social security due diligence should therefore form part of broader employment and payroll due diligence.
Refund of Incorrectly Paid SGK Contributions
Employers and insured persons can sometimes pay contributions that were not legally due or that were incorrectly calculated.
Where SGK determines that contributions were wrongly or unnecessarily collected, qualifying amounts can be refunded under the applicable statutory framework.
Ten-Year Period for Incorrect SGK Contributions
Where less than:
10 years
have passed since the contributions were collected, incorrectly or unnecessarily paid contributions can generally be refunded to the relevant parties according to their respective shares.
Potential recipients can include:
- employers;
- insured persons;
- voluntarily insured persons;
- general health insurance participants; and
- qualifying beneficiaries.
Interest on Refunded SGK Contributions
Qualifying refunds are made together with statutory interest under the applicable rules.
The interest calculation generally runs from the beginning of the month following the month in which the contribution was paid to SGK until the beginning of the month in which the refund is made.
Companies identifying historical payroll overpayments should therefore examine whether a refund claim remains within the applicable statutory period.
Public Procurement and SGK Debt
SGK compliance can directly affect companies performing work under public procurement arrangements.
Public administrations, revolving-fund organizations, certain financial institutions, and other statutory organizations have specific reporting and payment obligations concerning contractors performing tendered work.
Contractor Information Provided to SGK
Organizations falling within the relevant framework must report qualifying contractors and their addresses to SGK within:
15 days.
This enables SGK to monitor contractors’ social security compliance.
Can an Employer Receive Public Contract Payments While Owing SGK Debt?
Payment of contractor receivables can be linked to the contractor’s SGK debt status.
Employers’ progress payments or other qualifying public-contract receivables can be subject to checks concerning outstanding:
- social security contributions;
- contribution-related debts; and
- administrative fines.
This makes an employer’s SGK debt position commercially important, not merely an internal payroll matter.
SGK Debt Clearance and Public Contracts
Companies participating in Turkish public procurement should monitor SGK compliance continuously.
Waiting until a payment becomes due before investigating outstanding social security liabilities can create cash-flow problems.
Payroll teams, accounting teams and contract-management teams should therefore coordinate where the company performs public-sector work.
Is Social Security Insurance Mandatory in Turkey?
Yes.
Social security coverage is compulsory where the statutory conditions are satisfied.
Individuals falling within short-term and long-term insurance branches are required to be insured, while individuals falling within general health insurance are subject to the applicable GSS requirements.
Employer and employee agreement cannot generally override these statutory obligations.
Can an Employee Waive SGK Rights?
No.
Contractual provisions intended to:
- eliminate;
- reduce;
- waive; or
- transfer
rights and obligations established under Law No. 5510 are invalid where they conflict with the mandatory statutory framework.
An employee cannot validly agree to remain unregistered simply because they prefer to receive a higher net payment.
Similarly, an employer cannot avoid SGK obligations by inserting a clause into the employment agreement.
“Freelancer” Labels Do Not Automatically Eliminate SGK Obligations
The mandatory nature of social security also means that contractual terminology alone does not determine insurance status.
Calling an individual:
- a freelancer;
- consultant;
- independent contractor; or
- service provider
does not necessarily prevent the relationship from being treated as employment if the actual working conditions establish the legal characteristics of an employment relationship.
Companies should therefore assess substance rather than relying solely on contract titles.
Recovery of Undue Payments Made by SGK
SGK can recover benefits, pensions, income payments, or other amounts that were paid without legal entitlement.
The applicable recovery period depends significantly on why the incorrect payment occurred.
A distinction is made between:
- payments resulting from intentional or culpable conduct by the recipient; and
- payments resulting from SGK’s own erroneous administrative action.
Undue Payments Caused by Intentional or Culpable Conduct
Where the incorrect payment results from the recipient’s intentional or culpable conduct, SGK can recover qualifying payments made during a retrospective period of up to:
10 years
from the date on which the incorrect transaction is identified.
Applicable statutory interest can also be charged according to the legal framework.
Undue Payments Caused by SGK Error
Different rules apply where the overpayment results from SGK’s own incorrect administrative action.
In such cases, recovery generally concerns payments made during a retrospective period of up to:
5 years
from the date the error is identified.
The repayment terms are also more favorable than in cases involving intentional or culpable conduct.
24-Month Interest-Free Repayment Period
Where an undue payment resulted from SGK’s own error, qualifying amounts repaid within:
24 months following notification
can generally be repaid without interest under the statutory framework.
Where repayment occurs after that period, statutory interest can become applicable.
Amounts owed can also potentially be offset against receivables that the individual has from SGK.
Limitation Period for Income and Pension Claims
Beneficiaries should not assume that unclaimed SGK income or pension entitlements remain indefinitely recoverable.
For certain benefits arising from:
- occupational accidents;
- occupational diseases;
- duty disability; and
- death,
amounts that are not claimed within the statutory period can become time-barred.
Five-Year Limitation Period
Under Article 97 of Law No. 5510, qualifying portions of income or pensions not requested within:
5 years from the date entitlement arose
can become subject to the statutory limitation rule.
This makes timely applications important.
Exception Where There Is a Justified Reason
The limitation rule does not necessarily apply in the same manner where the beneficiary can establish a legally justified reason for failing to apply to SGK.
Whether a reason is sufficient depends on the applicable legal standards and circumstances.
Beneficiaries should nevertheless avoid unnecessary delays in submitting social security claims.
Legal Framework for Social Security Rights
Law No. 5510 provides the central legislative framework governing social insurance and general health insurance rights and obligations in Turkey.
Statutory amendments affecting the rights and obligations governed by the system must be considered within this legal framework.
Employers should therefore ensure that payroll policies remain aligned with amendments to social security legislation.
Official Notifications Under Social Security Legislation
Formal notifications made under Law No. 5510 are subject to the applicable rules concerning official service of documents, including the framework established by Turkey’s Notification Law No. 7201.
This is important because statutory deadlines can begin to run from the legally relevant notification date.
Companies should therefore have procedures for receiving and escalating official SGK correspondence.
Why SGK Notifications Should Never Be Ignored
An SGK notice can concern matters such as:
- unpaid contributions;
- administrative fines;
- inspection findings;
- document requests;
- employee registration;
- contribution corrections; or
- other statutory liabilities.
Failure to route official correspondence promptly to payroll, HR, finance or legal teams can result in missed objection or payment deadlines.
International companies should therefore identify who is responsible for monitoring official Turkish notifications.
SGK’s Right to Request Information and Documents
SGK has extensive statutory authority to obtain information needed to administer the social security system and collect social security receivables.
The obligation to provide information can apply to a broad range of entities.
These include:
- organizations subject to the Banking Law;
- revolving-fund organizations;
- natural persons;
- legal entities;
- public administrations; and
- institutions established by law.
Can SGK Request Confidential Information?
SGK’s information-gathering powers are broad.
Subject to statutory safeguards concerning matters such as:
- national security;
- fundamental foreign interests of the state;
- privacy and family life; and
- rights of defence,
entities can be required to provide information and documents necessary for social security administration and the collection of SGK receivables.
The fact that information is regarded as confidential under ordinary business procedures does not automatically exempt it from a lawful SGK information request.
Information Can Be Requested Periodically or Individually
SGK can require relevant information:
- at specified recurring intervals; or
- following a specific request.
The information must be provided within the applicable period specified under the legal framework or in the lawful request.
Employers should therefore maintain processes for responding to SGK requests promptly and accurately.
Payroll Records and SGK Audits
Payroll records are central to SGK compliance.
During an audit, SGK may compare different sources of information, including:
- employment contracts;
- payroll calculations;
- bank transfers;
- accounting records;
- attendance information;
- tax declarations;
- employee statements; and
- workplace records.
Inconsistencies can raise questions concerning whether employees or earnings were properly declared.
Underreported Salary Risk
Registering an employee with SGK is not sufficient if the employer declares an artificially low contribution base.
The employee’s qualifying earnings must also be correctly reported.
For example, discrepancies between:
- contractual salary;
- payroll;
- bank payments; and
- SGK contribution earnings
can create significant compliance risks.
International companies should therefore ensure that local payroll receives complete compensation information.
Bonuses and Variable Compensation
Historical SGK audits can also examine whether contribution-bearing variable payments were properly declared.
These may include:
- bonuses;
- sales commissions;
- performance incentives;
- recurring allowances; and
- other employment-related payments.
Companies should retain documentation explaining the payroll treatment of each compensation component.
SGK Compliance During Employee Onboarding
A compliant onboarding process should include:
- identifying the legal employer;
- confirming the employee’s insurance status;
- registering the employee within the statutory deadline;
- documenting salary and benefits;
- configuring payroll;
- collecting necessary employee information; and
- retaining registration evidence.
Registration should occur before the applicable statutory deadline rather than being corrected retrospectively.
SGK Compliance During Employment
Throughout employment, employers should monitor:
- monthly contribution days;
- earnings subject to contributions;
- bonuses;
- commissions;
- absences;
- sick leave;
- unpaid leave;
- benefits;
- salary changes; and
- other events affecting SGK declarations.
Payroll should reflect the employee’s actual employment circumstances.
SGK Compliance at Termination
Employee offboarding should include a final review of:
- termination date;
- SGK termination notification;
- final salary;
- unused annual leave;
- severance compensation where applicable;
- notice compensation where applicable;
- bonus or commission payments;
- contribution treatment; and
- outstanding employee receivables.
Termination documentation should then be retained according to the statutory record-retention rules.
Employer of Record and SGK Compliance in Turkey
International companies without a local employing entity may use an Employer of Record (EOR) in Turkey to manage employment and payroll administration.
Depending on the arrangement, EOR services can include:
- employment contracts;
- employee onboarding;
- SGK registration;
- monthly Turkish payroll;
- social security contributions;
- employee benefits;
- annual leave administration;
- payroll records;
- SGK notifications;
- employee offboarding; and
- statutory document retention.
This can help international companies maintain a structured compliance process throughout the employee lifecycle.
Payroll Provider vs. Employer of Record
A payroll provider and an Employer of Record perform different functions.
A payroll provider generally processes payroll for employees who are legally employed by the client’s own Turkish entity.
An Employer of Record, by contrast, acts as the local legal employer under the agreed structure and handles the associated employment and payroll administration.
International businesses should determine which model corresponds to their corporate structure and hiring needs.
SGK Compliance in Mergers and Acquisitions
SGK issues should form part of employment due diligence whenever a company is:
- acquired;
- merged;
- reorganized;
- transferred; or
- integrated into another business.
The review should not focus only on outstanding debts shown in current accounting records.
Historical exposure can arise from:
- undeclared employees;
- underreported salaries;
- incorrect contribution exemptions;
- invalid incentives;
- historical administrative fines; and
- pending employee service claims.
The statutory possibility of successor liability makes these issues particularly important.
Employer SGK Compliance Checklist
Employers operating in Turkey should regularly verify that:
- workplace and employee registrations are correct;
- employees are registered within statutory deadlines;
- payroll and SGK declarations reconcile;
- earnings subject to contributions are correctly reported;
- historical records are retained for the required period;
- requested documents can be produced promptly;
- SGK notices are centrally monitored;
- contribution debts are regularly reviewed;
- historical liabilities are investigated before acquisitions; and
- employee termination records remain archived after departure.
A documented compliance process is significantly more reliable than attempting to reconstruct records after an SGK inspection begins.
Turkish employers have extensive obligations concerning SGK record retention, employee registration, payroll reporting, social security contributions and document production.
Private-sector employers generally need to retain relevant workplace books, records and documents for 10 years, while different periods apply to public administrations and certain other situations. When SGK requests records during an inspection, employers generally need to produce them within the applicable 15-day period.
Unregistered employment can also create long-term liabilities. SGK inspections can identify undeclared service and contribution earnings, while employees can potentially bring service determination claims before labor courts under the applicable statutory conditions.
Corporate transactions create an additional risk. When a workplace is transferred or businesses merge, the new employer can become jointly and severally liable for qualifying historical SGK debts. Social security due diligence should therefore form an important part of acquisitions in Turkey.
Finally, social security coverage is mandatory. Employers and employees cannot simply contract out of statutory SGK rights and obligations.
For international businesses, combining accurate Turkish payroll, SGK reporting, record retention, social security compliance and Employer of Record support can significantly reduce both day-to-day payroll risks and longer-term liabilities.