Judges have a special duty given by the law, namely to help the head of the
court to oversee the implementation of court sentence known as supervisory
judge. In reality, the implementation of this duty of the supervisory judge is yet
to be optimal. There is a legal problem in this research, namely How to
optimize the role of supervisory judge in the execution of court sentence of
Yogyakarta State Court and the development of prisoners? This legal research
is an empirical legal research that focuses on social facts, and the data were
collected through interviews and literature studies. The conclusion of this
research is that the supervisory judge of Yogyakarta State Court on doing
special duties is yet to be optimal due to a supervisory judge must supervise
on 4 prisons. In addition, the report of supervision have not been optimally
utilized. It is therefore suggested to appoint judge to do such job without any
additional job and to regulate the minimal supervisory judge personel in each
court.