Archives are of great importance in office operations, primarily because the most important tasks of office operations are performed within it. Great expertise of archives employees is precondition for performing complex tasks like storage, evaluation, selection, extraction and handover of archival material to archives. Within the archives material is kept until the prescribed deadlines for each certain archival material. In order to properly preserve material archives must meet certain conditions related to the equipment inside it, and the space inside archives. This paper elaborate the history of archival service and state archives. One part of this paper is related to the National Archives in Varaždin, which is also used as an example in order to present archival materials within archives. In addition to the archive in Varaždin we used archives of the Varaždin Fire Department as an example to present requests for facilities and archives equipment. Archives must meet the relevant requirements in order to contain archival material within it, and besides space and equipment it is very important for material to be properly registered and stored. Archives except that stores the material she also provides the use and the use of, and on how they care workers in the archives. Considering that this paper is related to the importance of archives in office management and all the jobs performed by archives, which are related to the treatment and keeping records of the cases, the method of evaluation, selection, extraction, and at the very end handing archival material to the archives are processed thru it. All jobs of archives in office operations are very important because archives preserve all important documents, files, etc., that are the business foundation of a certain institution in which archives are located.