https://europa.eu/youreurope/business/human-resources/employment-contracts/redundancies/index_en.htm https://europa.eu/youreurope/business/human-resources/emplo

https://europa.eu/youreurope/business/human-resources/employment-contracts/redundancies/index_en.htm https://europa.eu/youreurope/business/human-resources/employ... tl;dr: There is a special process called collective redundancy which requires a 30 day notice given to the workers. There are also country-specific rules.