https://www.socialeurope.eu/2017/07/time-eu-fair-movement-directive/
http://foodresearch.org.uk/wp-content/uploads/2016/07/Agricultural-labour-briefing-FINAL-4-July-2016.pdf
https://www.eurofound.europa.eu/sites/default/files/wpef17037.pdf
https://www.boeckler.de/pdf/v_2018_04_26_27_arg_co_determ.pdf