Research activities at the SZN require the employment of a large number of PhDs and young researchers. PostDoc programs are defined on a 3-year basis and PostDocs are continuously recruited through public calls. Their work is linked either to specific research EU programs or to flagship programs of the SZN. The recruitment of PostDocs allow their further training in specific research fields and is operated either through grants or by means of Assegni di Ricerca, whose duration can vary from 1 to 5 years.