This chapter describes supervision as it is experienced by the supervisor and the client and examines how the legislator's aim of individual prevention is put into practice. The aims of supervision are not made any more explicit in the brochure "Instructions for Supervisors", which raises expectations that the supervisor will "succeed" with his work although practical guidelines on how this is to be achieved are minimal. Support and assistance is to be provided through the supervisor giving assistance and support to the offender to lead a proper and law-abiding life, or—a later formulation—to facilitate the offenders' adjustment in society. Supervision behavior is seen as a result of the supervisor's social situation and personality. The supervisors were asked if they wanted to change supervision in any way and, to specify what they would like changed. The assistance which the chief probation officer can be expected to provide is service-oriented to a greater extent than is the case with voluntary supervisors.