https://theconversation.com/fact-check-does-immigration-have-an-impact-on-wages-or-employment-83666
http://ec.europa.eu/social/main.jsp?catId=1143&intPageId=3193&langId=en/
https://www.tasc.ie/assets/files/pdf/ensuring_good_future_jobs.pdf
https://www.socialeurope.eu/2017/07/time-eu-fair-movement-directive/