„Differences are particularly sharp in Canada where 58 % of foreign-born have higher education versus only 11 % with low education, in Estonia (44 versus 8 %), the United Kingdom (48 % versus 19 %) and Poland (46 % versus 13 %).“
Sara Bonfanti u. a., „Migrants’ skills: Use, mismatch and labour market outcomes“ in OECD (Hrsg.), „Matching Economic Migration with Labour Market Needs“ (2014), S. 254