Performance Management and Employee Termination Risks in Turkey

A detailed legal guide to performance management and employee termination risks in Turkey, covering valid reason dismissals, notice procedures, defense rights, burden of proof, reinstatement risk, and HR best practices.

Performance management is often presented as an HR tool for improving productivity, aligning employees with business goals, and identifying talent. In legal terms, however, it is much more than that. In Turkey, a weak performance management system can become one of the fastest routes to an invalid termination claim. Employers frequently assume that underperformance is easy to prove because managers “already know” the employee is not meeting expectations. Turkish labour law works differently. Once the employment relationship reaches the stage of dismissal, the employer’s internal belief is not enough. What matters is whether the termination fits the statutory framework, whether the reason is classified correctly, whether the procedure is followed properly, and whether the employer can prove the decision with reliable and consistent documentation. Labour Act No. 4857 therefore turns performance management into a legal risk area, not merely a managerial one. (Natlex)

The main legal foundation is found in Articles 17 through 21 and Article 25 of Labour Act No. 4857. Article 17 regulates notice periods for indefinite-term continual employment contracts. Article 18 states that, in workplaces with thirty or more employees, an employer terminating an employee engaged for an indefinite period and having at least six months of seniority must rely on a valid reason connected with the employee’s capacity or conduct or with the operational requirements of the establishment or service. Article 19 requires written notice and, for conduct- or performance-based termination, an opportunity for the employee to defend himself or herself. Article 20 places the burden of proving the valid reason on the employer and provides a one-month window for the employee to challenge the dismissal. Article 21 sets out the consequences of invalid termination, including reinstatement-related compensation and wages for the idle period. Article 25, by contrast, regulates summary termination without notice in limited and more serious cases. (Natlex)

This structure immediately shows why performance management and employee termination risks are inseparable. Under Turkish law, poor performance is not simply a business disappointment. It is a termination ground that must fit inside the narrower category of “valid reason,” at least where job-security conditions exist. That category is different from summary termination for grave misconduct. It also operates differently from terminations based on operational necessity such as restructuring or redundancy. In practice, employers get into trouble when they mix these categories, label a performance problem as “misconduct” without adequate basis, or use broad disciplinary language to avoid the procedural safeguards that performance-related dismissal requires. (Natlex)

A core point for HR teams is that Article 18 does not treat every business dissatisfaction as a valid reason. The statute speaks of reasons connected with the employee’s capacity or conduct, or operational requirements of the establishment or service. That means the employer must first identify what kind of termination it is actually making. If the problem is inability to meet role expectations, lack of output, repeated failure to achieve targets that are genuinely tied to the job, or inability to perform the core function at the expected level, the legal theory is usually capacity or performance. If the problem is insubordination, dishonesty, harassment, repeated unjustified absence, or refusal to perform duties after warning, the legal theory may shift toward conduct or even Article 25. Misclassification is one of the biggest sources of litigation risk. (Natlex)

The distinction between valid-reason termination and just-cause termination is especially important. Article 25 allows the employer to end the contract immediately and without observing notice periods in specific cases, including where the employee misled the employer about essential qualifications, sexually harassed another employee, committed dishonest acts such as breach of trust or theft, was repeatedly absent without permission as defined in the statute, refused to perform duties after warning, or seriously endangered safety or caused serious damage through wilful or grossly negligent conduct. These are not ordinary performance cases. They belong to a narrower class of serious misconduct or comparable situations. By contrast, ordinary poor performance usually requires a more measured and procedurally careful route. Employers that attempt to convert weak performance into summary termination without a solid Article 25 basis take a substantial litigation risk. (Natlex)

That is why a lawful performance management system must begin long before termination. The strongest first step is a clear definition of the job itself. If the role has no accurate job description, no stable reporting line, no measurable expectations, and no evidence that those expectations were communicated, the employer’s later claim that the employee “underperformed” will often look subjective. Turkish law does not list a detailed statutory checklist for performance systems, but the employer’s burden of proof under Article 20 makes objective structure practically essential. An employer that must prove valid reason later is far better protected if it can point to defined duties, assigned responsibilities, communicated targets, and an evaluation process applied in a consistent way. (Natlex)

Consistency is equally important. Article 18 itself lists several matters that do not constitute valid reasons, including union activity, filing complaints or participating in proceedings against the employer, and reasons such as race, colour, sex, marital status, family responsibilities, pregnancy, religion, political opinion, national extraction, or social origin. This means that a performance management system cannot be used as a disguised exit route for employees who are inconvenient for legally protected reasons. If comparable employees are treated differently, if appraisal criteria shift suddenly after a complaint, or if maternity-related absence is informally counted against performance, the employer’s case weakens significantly. In practice, the problem is often not only the dismissal itself, but the appearance that “performance” was a label placed on another motive. (Natlex)

A sound performance process also needs time structure. Employers often wait until dissatisfaction becomes severe and then try to compress months of concerns into a single termination meeting. That is risky. Article 19 requires that the termination notice be in writing and that the reason be stated clearly and precisely. For conduct- and performance-related dismissals, the same article says the employee cannot be terminated before being given an opportunity to defend himself or herself against the allegations, unless the employer is invoking the separate summary-termination right under Article 25/II. This means performance-based dismissals should not come as an unexplained surprise. The safer legal path is to build a documented sequence showing expectations, gaps, feedback, opportunity to respond, and then a reasoned final decision. (Natlex)

This does not mean the law formally requires a “performance improvement plan” by name in every case. The statute does not use that specific HR terminology. But as a matter of legal risk control, some form of structured warning, measurable correction period, and response opportunity often makes the employer’s position much stronger. The reason is simple: Article 20 places the burden of proof on the employer. If the employer later claims that the employee could not meet role expectations despite support and notice, it is much easier to prove that claim with contemporaneous records than with retrospective managerial opinions. In other words, performance management becomes the evidence architecture of termination. (Natlex)

Notice periods are another critical issue. Under Article 17, before terminating an indefinite-term continual employment contract, the terminating party must serve notice. The statutory minimum periods are two weeks for service under six months, four weeks for service from six months to under one and a half years, six weeks for service from one and a half years to under three years, and eight weeks for service over three years. The law also allows the employer to terminate immediately by paying wages corresponding to the notice period in advance. Importantly, Article 17 states that even if the employer pays in lieu of notice, that does not prevent the application of Articles 18, 19, 20, and 21. So notice pay is not a substitute for valid reason where job-security rules apply. (Natlex)

This is a common employer misunderstanding. Some employers think that once notice pay is offered, the legal risk of a performance-based dismissal disappears. It does not. Article 17 expressly says otherwise. An employer may comply with notice obligations and still lose a reinstatement case if the performance-based termination lacks valid reason or suffers from procedural defects. For HR departments, this means payroll compliance and termination validity are related but separate questions. A clean notice calculation cannot cure a weak performance file. (Natlex)

The litigation pathway also shapes employer risk. Article 20 gives the employee one month from receipt of the notice of termination to challenge the dismissal before the labour court. The same article places the burden of proving valid reason on the employer, unless the employee claims that the real reason was different from the one presented. Article 21 then provides serious consequences if the dismissal is found unjustified: the employer must re-engage the employee within one month, and if it does not, compensation of not less than four months’ wages and not more than eight months’ wages becomes payable, alongside up to four months’ wages and other entitlements for the period not worked until the final judgment. The employee must apply for re-engagement within ten working days after the final decision is communicated. (Natlex)

Those remedies explain why performance-based dismissals deserve more care than many employers assume. An invalid termination is not just a matter of paying ordinary notice-related sums. It may lead to reinstatement risk, reinstatement-related compensation, idle-period wages, and additional litigation cost and management burden. In practical terms, the employer’s exposure often depends on whether the file clearly shows a defensible performance rationale and a procedurally lawful decision process. A weak appraisal system, inconsistent targets, or missing defense opportunity can turn an employer’s business judgment into a legally expensive mistake. (Natlex)

The dispute-resolution framework adds another compliance step before court. The Ministry of Justice’s official overview of the Turkish justice system states that in labour disputes it is obligatory to apply to a mediator before filing a lawsuit. This matters strategically. A performance-based termination may therefore be tested first in mandatory mediation, where the employer’s documentation, clarity of reason, and internal consistency will heavily influence settlement leverage. Employers that arrive at mediation with only vague manager complaints and no structured performance record are often in a weaker position than they expected.

Performance management also interacts with the law on changing working conditions. Article 22 of the Labour Act states that changes to working conditions arising from the employment contract, annexed regulations, similar sources, or workplace practice must be notified in writing, and they do not bind the employee unless accepted in writing within six working days. If the employee does not accept, the employer may terminate only by respecting notice rules and by stating in writing that the proposed change is based on a valid reason or another valid reason for termination. This matters because some employers try to respond to weak performance by unilaterally imposing demotions, heavy salary-linked changes, role downgrades, or materially altered working conditions without proper written process. That creates a second legal risk in addition to the original performance issue. (Natlex)

From a practical HR perspective, the safest way to manage performance is to treat the system as both a business tool and a legal process. That means creating role-specific job descriptions, measurable expectations, review intervals, written feedback culture, and a documented escalation path. It also means ensuring that managers distinguish between three separate questions: whether the employee is not meeting expectations, whether the issue is remediable, and whether the problem truly belongs to performance rather than misconduct or operational restructuring. A disciplined classification process reduces the risk of using the wrong termination route. (Natlex)

Another key point is the treatment of the employee’s defense. Article 19 requires an opportunity to defend where termination is related to conduct or performance. In practice, this should not be reduced to a cosmetic form letter that arrives after the decision is already final. The better approach is to present the employee with the concrete concerns, reference the factual basis, and allow a genuine response. Even if the employer remains convinced that dismissal is necessary, a real defense opportunity helps show that the process was not arbitrary and that the final notice was based on an evaluated record rather than a predetermined outcome. (Natlex)

Employers should also be cautious about timing and recency. Article 26 states that, for immoral, dishonourable, or malicious behaviour, the right to summary termination may not be exercised after six working days from learning of the facts and in any case after one year from the act, unless the employee gained material benefit from it. That statutory timing rule applies to Article 25-type cases, not ordinary performance cases, but it still teaches an important compliance lesson: termination decisions should not drift indefinitely after the employer has formed its factual understanding. Long periods of tolerated underperformance with no meaningful record can make later dismissal look less convincing, especially if the employer suddenly acts after an unrelated conflict. (Natlex)

A further risk lies in overreliance on annual appraisal forms. Many employers believe that a low annual score by itself proves poor performance. Legally, however, a score is only as strong as the system behind it. If the criteria are vague, if employees were never told how they would be measured, if similar roles use different standards, or if managers rate employees inconsistently, the appraisal document may add less value than expected. Because the employer carries the burden of proof under Article 20, a reliable performance record usually needs context: role expectations, actual outputs, coaching efforts, defense opportunity, and a written termination rationale that is clear and precise under Article 19. (Natlex)

At the same time, employers should not abandon performance management merely because litigation risk exists. The better conclusion is the opposite: the stronger and more objective the performance system, the lower the termination risk tends to be. Where expectations are transparent, managers are trained, reviews are documented, and employees are given a genuine opportunity to improve, performance-related dismissals are easier to explain and defend. The law does not forbid employers from terminating underperforming employees. It requires that they do so for a valid reason, through the proper procedure, and with proof that can withstand scrutiny. (Natlex)

In conclusion, performance management and employee termination risks in Turkey should be understood as one integrated legal subject. Labour Act No. 4857 does not allow employers to rely on general dissatisfaction or undocumented managerial intuition once a dismissal reaches the legal stage. Article 18 requires a valid reason in job-security cases. Article 19 requires written notice and, for performance-related dismissals, a defense opportunity. Article 20 gives the employee a rapid challenge route and places the burden of proof on the employer. Article 21 exposes the employer to reinstatement-related compensation and idle-period wages if the dismissal is invalid. Article 25 reserves immediate termination for narrower and more serious cases. When these provisions are read together, the message is clear: performance management is not just an HR technique. It is the legal foundation on which a defensible termination decision must stand. (Natlex)