https://www.socialeurope.eu/brexit-can-be-stopped-but-the-window-of-opportunity-is-closing-fast
http://www.independent.co.uk/news/uk/politics/brexit-workers-rights-european-court-of-justice-ruling-conley-king-ecj-gig-economy-eu-a8082801.html
https://bdi.eu/media/user_upload/20171005_Pressemitteilung_Brexit.pdf