The Amsterdam Institute for Advanced labour Studies–Hugo Sinzheimer Institute (AIAS-HSI) at the University of Amsterdam implemented a 2-year project COMET: ‘COvid-19 crisis, MEntal health of healthcare workers and Trade unions actions’ (Aug 2022 - July 2024). In cooperation with European Public Service Union (EPSU) and European Psychiatric Association (EPA). COMET is co-financed by the European Commission.