Equal treatment debt or subject to equal treatment debt is to behave equally according to the principles of justice. In general, the principle of equality requires no different treatment between the people who are in equal status and conditions. The principle of equality has been one of the most important issues in the convention on the prohibition of gender discrimination on the international level, generally in the context of human rights and specifically the social rights of employees. In our study, we first briefly examined gender discrimination in terms of international conventions, especially focusing on European Union contracts and directives. Later on, the equality principle included in the Constitution, which constitutes the legal basis of the equality principle in the Turkish Law, the Labor Law numbered 4857 and the regulations on gender discrimination included in the Law on Human Rights and Equality of Turkey were examined