https://www.boe.es/boe/dias/2021/12/30/pdfs/BOE-A-2021-21788.pdf
https://www.researchgate.net/publication/351524462_HesaMag_23_-_with_a_special_report_about_workers_in_the_food_chain/link/609bfc9b458515a04c638ff6/download
https://www.nuffieldtrust.org.uk/files/2022-09/1662995727-nuffield-trust-new-horizons-web.pdf
https://www.epi.org/publication/trumps-deportation-agenda-will-destroy-millions-of-jobs-both-immigrants-and-u-s-born-workers-would-suffer-job-losses-particularly-in-construction-and-child-care/