https://www.socialeurope.eu/2017/06/world-imbalances-decline-wages/
https://www.boeckler.de/fpdf/HBS-008373/p_wsi_report_77e_2022.pdf
https://www.dw.com/en/germanys-economic-time-bomb-the-labor-crisis/a-65522919
https://www.resolutionfoundation.org/app/uploads/2019/11/Feel-poor-work-more.pdf