At Austrian universities, organisational law has always changed according to the changing demands of the various epochs. This paper is aimed at portraying the historical background of the newer university development concerning organisational law. Thus, the three major reforms in organisational law at Austrian universities are subject to this thesis: HOG 1955, UOG 1975 and UOG 1993. The University Law 2002 shall also be analysed briefly. Many of the regulations taken over by university reforms had already been part of the legal system of the 19th century. Therefore, the development from the middle of the 19th century until the year 1955 is also described. According to the title of this thesis, the focus of this paper is laid on the regulations which had a direct impact on the legal position of the university affiliates, as, i.e., the classification of university affiliates, regulations concerning state doctorates and appointments of university professors. The variable representation within the collegial institutions shows the specific legal position of the single categories of university affiliates and is therefore mentioned within this thesis paper.