The urgency of the studied problem is due to the European integration of Ukraine and the presence in modern Ukrainian society of an acute need for codification of labour legislation. Ukraine has an extensive system of labour regulations that fail to correspond to one another and often lead to the violation of constitutional and human rights. This article aims to analyse the legislation of leading European countries in the field of codification of labour legislation in order to identify factors and problems of codification of labour legislation in Ukraine. Based on a comparative analysis of Ukrainian and European legislation in the field of codification of labour law, a list of recommendations will be presented aimed at improving the codification process of labour law in Ukraine. The materials of the article have practical value for everyone, who must participate in effective lawmaking in Ukraine.