https://www.socialeurope.eu/why-such-disparity-between-unemployment-rates-in-europe
https://www.resolutionfoundation.org/app/uploads/2019/11/Feel-poor-work-more.pdf
https://www.socialeurope.eu/marrying-labour-flexibility-protection
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20001en.pdf