The Bachelor Thesis deals with infinitive clauses in the administrative style. The main attention is paid to the identification of the function of the infinitive structures from the syntactic point of view and to the frequency of their use. The theoretical part of the work gives details about the system of non-finite structures, with a preferential treatment to the infinitive clauses. The practical part is based on the analysis of three English texts of the administrative style where the frequency of occurrences of the infinitives in the particular function is discussed.