- Where poor performance is alleged, the employer must put forward concrete and measurable performance criteria.
- In terminations for operational reasons, the employer is expected to document its financial difficulties or the need for restructuring.

Legal Insights
The Reinstatement Action
The reinstatement action protects employees against dismissals that are unfair or not based on a valid reason. This note sets out the conditions for bringing the action, the applicable time limits and how the Court of Cassation assesses the employer’s conduct.
Published 24 January 2025
THE REINSTATEMENT ACTION
The reinstatement action is a legal right regulated under Labour Act No. 4857 with a view to protecting employees against dismissals that are unfair or not based on a valid reason. This action is intended to prevent arbitrary terminations by the employer, to balance employee–employer relations and to secure the employee’s right to return to work.
The right to reinstatement is a judicial remedy that the employee may invoke against the employer where the employment contract has been terminated on an invalid ground, and it is regarded as one of the most important elements of job security.
The reinstatement action is regulated in Article 18 and the following articles of Labour Act No. 4857. These provisions limit the employer’s right of termination and impose, under certain conditions, an obligation to base a dismissal on valid grounds.
Furthermore, within the framework of the job security provisions, the Turkish Code of Obligations No. 6098 and norms of international law are also taken into account. In particular, the ILO Conventions and Articles 49 and 50 of the Constitution contain fundamental regulations on this subject.
As regards the notice of termination;
The employer is obliged to effect the termination in writing and to state the ground for termination clearly. Where the employer has not given written notice or has not supported the ground with concrete evidence, the termination is deemed invalid. These criteria must be supported by documents such as performance appraisal forms, warnings or productivity reports.
Before effecting a termination based on the employee’s conduct or performance, the employer must without fail obtain the employee’s defence statement. Where this obligation is not complied with, the termination is regarded as procedurally defective.
In order for a reinstatement action to be brought;
The employee must be an employee working within the scope of Labour Act No. 4857.
The employee must be working under an indefinite-term employment contract.
The employee must have at least six months’ seniority at the workplace. (Employees with less than six months’ service, or employees at a workplace employing fewer than 30 employees, cannot bring a reinstatement action. Rights such as termination-related compensation may nevertheless be claimed.)
The employer must employ at least 30 employees at the workplace
The employer must be unable to base the termination on a valid reason or must have failed to give written notice.
An employer’s representative or that representative’s assistants cannot bring a reinstatement action.
Its Place in Turkish Law and Its Operation in Practice
In Turkish law, reinstatement actions form a fundamental element of job security. In practice, the burden of proving the valid grounds rests with the employer. In particular, in terminations effected on grounds of poor employee performance or for operational reasons, the employer is obliged to submit concrete evidence.
Disclaimer — This document has been prepared for general information purposes only and does not constitute legal advice or the provision of legal services. Its content reflects the legislation and settled practice in force at the date of preparation and may cease to be current as a result of legislative amendments or judicial decisions. Professional legal advice should always be obtained before acting on any specific matter.

