Lean is a concept that help companies to become more efficient and more focused on their customers and their goals. Previously lean have mostly been used in production but today it is a trend to implement lean in other types of organizations. To get maximum efficiency in a company all parts and divisions need to be involved in the improvements. Organizations realizes that administrative functions can be the least efficient and that part of the organization need to be changed. There are not yet much research about lean in administrative functions and for an organization that want to implement lean in their administrative environment an understanding of complications and barriers they might face can help. The purpose of this study was to get an insight of what barriers that an organization will face when implementing lean in administrative functions. The theoretical framework was developed for the purpose of this study and it is done by a combination of the lean concept and administrative functions but with a focus on barriers when implementing lean. The framework is presented through four blocks of barriers in the implementation of lean in administrative functions. The four blocks are, lack ofknowledge about lean, lack of management support and involvement, lack of patience and longterm perspective and also lack of motivation. The approach is based on a qualitative study where empirical data have been collected through four Swedish organizations. The organizations have all implemented lean or been part of an implementation of lean in administrative functions. The conclusion of this study is that barriers in administrative functions can be compared to barriers in production and it can be said that they are similar. When implementing lean in administrative functions the barrier lack of knowledge about lean is large as it is common that organizations misunderstand the lean concept and that it can not be used in administrative environment in the same extent as in production. It is also a barrier that the lack of knowledge lead to that the organization do not know how to use the lean concept in their organization. To overcome the barriers the management support and involvement is highly important. The limitations of this study is that the findings need more investigation to be generalized. The chosen barriers for the framework can have affected the conclusion and more barriers can be found.