The first case of coronavirus was first reported on 8th of December 2019 in Wuhan City, China. Since then, from that moment on, the world faces an unprecedented situation. Since 2nd of March 2020 European Union has emphasised the risk of coronavirus from "moderate" to "high", and by the end of that month, more than a third of the world's population was invited to stay at home. Most of these countries and territories, where at least 2.3 billion people live, have imposed a mandatory travel ban, about 40 of them. Restrictions of free movement of labourers due to the public health crisis, is a main theme of this graduate thesis. The paper is conceived of several parts. The introduction describes the concept of freedom of movement, as well as the possibilities and reasons for its restriction. In the second unit, the concept of labourers, the right to their employment, residence, mobility prohibition of discrimination and termination of residence in the Republic of Croatia is explained. The third and fourth units include the concept of establishment and the rights of family members of workers. The fifth unit contains the reasons and possibilities of restricting the freedom of movement of labourers, and the exception of public service. The sixth and seventh units describe the restrictions on freedom of movement related to the public health crisis, relatively the measures and procedures taken in the Republic of Croatia in response to the situation. The eighth unit covers the implementation of the procedure for approving the stay of labourers in the Republic of Croatia during the "COVID-19", while the ninth unit elaborates the actions and measures of other EU member states during the crisis, namely: Italy, Hungary, Germany and France. At the end of the paper, there is a conclusion, relatively a review of the actions of the EU member states in the unprecedented crisis.