https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef19034en.pdf
https://www.fastcompany.com/90556370/this-is-the-most-in-demand-skill-in-job-listings-right-now
https://www.ons.gov.uk/employmentandlabourmarket/peopleinwork/earningsandworkinghours/articles/contractsthatdonotguaranteeaminimumnumberofhours/may2017
https://socialeurope.eu/switzerland-defending-workers-rights