In some countries, more than two thirds of young teachers have short-term contracts …

„At EU level, among teachers below 35 years old, one out of three is employed on a fixed-term contract, and in some countries, more than two thirds of young teachers have short-term contracts. The high share of precarious employment contracts among young teachers seems to go beyond the needed flexibility of education systems to adapt to changing scenarios, like demographic changes or the need for temporary replacements.”
EU-Kommission (Hrsg.), Teachers in Europe (2021), S. 59.