Florian Jacoby deals with the private office, such as for example guardians, custodians, administrators of an estate, boards of directors, supervisory boards, property managers or insolvency administrators. These offices have the function of institutionalizing third persons in organizations. By virtue of their offices, they have been made into representatives, institutions or parties. The author takes a look at the uniform structures of offices, which can be described using the keywords external relationship, organizational relationship and basic relationship. He shows that the institution 'office' itself can be given the position of an apersonal subject, and thus consolidates the separation of office and officeholder. It is the office only which is a permanent part of the organization concerned. The officeholder is needed only to exercise the concrete functions.