The topic of this rigorous thesis is agency employment. Agency employment constitutes now a common part of the market with employment services and enables employment agencies to temporarily assign their employees to perform work at users. The thesis defines the concept of agency employment and describes its roles and functions which are typical for agency employment. One of the biggest user benefits of agency employment is the possibility of quick and effective workforce procurement for a wide range of different professions. The thesis contains a definition of agency employment at both the international and EU level. The thesis also presents international legal sources of agency employment adopted at the UN, EU legal sources of agency emplo...