https://www.socialeurope.eu/wp-content/uploads/2018/05/BP1-Devolution.pdf
http://www.nfuonline.com/assets/96747
https://www.publications.parliament.uk/pa/ld201617/ldselect/ldeucom/116/116.pdf
http://www.independent.co.uk/news/uk/politics/brexit-workers-rights-european-court-of-justice-ruling-conley-king-ecj-gig-economy-eu-a8082801.html