This doctoral thesis discusses temporary movements of service providers in the EU Internal Market. Movements such as posting of workers of cross-border movements of self-employed persons constitute one of the pillars of freedom to provide services. As granted by the Treaty on functioning of the European Union, businesses may temporarily conduct entrepreneurial activities in another EU Member State without being established there. Typical cases include installation of equipment purchased by a resident of another EU country, short-term construction works, trainings of personnel in foreign companies etc. Posted workers remain employed by a company in their country of origin and do not seek access to labour markets in the host state. Self-emplo...