Undocumented migrants are one of the most vulnerable groups in the EU. This report assesses the main findings and synergies of a selection of EU-funded research projects on irregular immigration and the status of undocumented migrants. It reveals that the results emanating from social science research contrast with the EU policy documents adopted in light of the forthcoming Stockholm Programme – the third multi-annual programme on an Area of Freedom, Security and Justice. The authors argue that acknowledgement of the findings of independent research is lacking in EU policy, which continues promote a control-based approach to migration that has profound ethical and human rights implications. The report concludes with a set of policy recommendations aimed at overcoming the current inconsistencies in EU and national policies as well as in practices on irregular migration under the mandate of the Stockholm Programme.