This paper investigates the factors that affect the decisions of the Prespes Beans’ (Fassolia ‘Presponʼ) producers to certify their product as a product of protected geographical indication (PGI). The study was based on primary data collected by means of a questionnaire completed by both PGI certified and non-certified producers. The logit model was used for the indication of factors that affect the producers’ decision to certify or not to certify their product as PGI. Descriptive statistics were also used for the study of leaders’ social features. The research results showed that the producers’ decision of adopting the protected geographical indication (PGI) certification was significantly linked to membership producer organizations (cooperatives or other groups), the years of agricultural experience, the size of the cultivated land as well as the motives for joining quality assurance schemes.