The goal of the paper is the analysis of the scale and structure of the phenomenon of labour immigration in Poland after its accession to the European Union. Gradual liberalisation of legal regulations concerning immi-grants on Polish labour market that occurred after 2004 has had an impact on continuous increase in the number of immigrants who work legally in Poland. Citizens of Ukraine are a predominant group of foreigners. Ukrainians have dominated labour market in Poland mainly in construction sector, services in households, agriculture and also in the sector of transport services and warehousing