CALS has been a hot issue in the industry related to the information technology in order to achieve the strategic competitive advantage, especially in the field of logistics and manufacturing firms. Nonetheless, while there is an abundance of literature advocating the strategic role of the concept in the field of logistics and manufacturing firms, little attention has been given to the planning process to be applied to public administration sectors. This research conducts a case study on Firm C, which is one of the government institutes, investigating its planning processes for which CALS concept should be applied. Based on the analysis of the document and interviews with the author, by applying information system planning and value chain models, this paper concludes that CALS concept can be successfully applied to the public administration sectors likewise industry sectors.