The issue to determine the competent court for disputes arising from the post-contractual non-compete obligation of the worker was frequently discussed during the abolished Labour Courts Law No. 5521. After the General Assembly of the Court of Cassation gave different decisions, it accepted that the commercial courts of the first instance were in charge and stably continued this opinion. The Chambers of the Court of Cassation dealing with Labour Law disputes have also decided that the labour courts have no jurisdiction over these decisions. After the Labour Courts Law No. 7036 has entered into force on 25.10.2017, there was no change in the case-law of the Court of Cassation on the subject. However, in some decisions of the Regional Courts of Justice on the subject, the issue should be evaluated in terms of the Labour Courts Law No. 7036 and the new Turkish Commercial Code No. 6102. The Regional Courts of Justice stated that it was not possible to maintain the judgment that the commercial courts of the first instance have jurisdiction. It reveals that labour courts are in charge of post-contractual non-compete disputes. So that change of jurisprudence in the case-law of the Court of Cassation on the subject is necessary. At the stage of publication of the study, the 9th Civil Chamber of the Supreme Court of Cassation also decided in line with our opinion, so it would be appropriate to continue this case law by the 11th Civil Chamber.