This open access book discusses how, and to what extent, the legal and institutional regimes and the socio-cultural environments of a range of European countries (the Czech Republic, Denmark, Finland, Greece, Italy, Switzerland and the UK), in the framework of EU laws and policies, have a beneficial or negative impact on the effective capacity of these countries to integrate migrants, refugees and asylum seekers into their labour markets. The analysis builds on the understanding of socio-cultural, institutional and legal factors as "barriers" or "enablers"; elements that may facilitate or obstruct the integration processes. The book examines the two dimensions of integration being access to the labour market (which, translated into a rights language means the right to work) with its corollaries (recognition of qualifications, vocational training, etc.), and non-discriminatory working conditions (which, translated into a rights language means right to both formal and substantial equality) and its corollaries of benefits and duties deriving from joining the labour market.