This paper deals with destinies and legal status of debtors in medieval Serbia. Lots of people owed money to Dubrovnik merchants. This kind of loan was widespread during Despot reign, and it culminates during Despot Djuradj's reign. Among Serbian towns Novo Brdo had the largest number of debtors, of whom majority were miners who needed loans so as to invest in their business until they found ore. Due to the fact that the payments were often much delayed, the Serbian authorities were frequently involved in solving that problem so as to satisfy both parties, and usually took the side of the debtor. There was some kind of house detention which forced the debtors to pay what they owed. All of this indicates the difficult position of miners in medieval Serbia.