Yigit KazancogluYesim Deniz Ozkan-Ozen2025-10-0620190968-488310.1108/QAE-12-2016-0089http://dx.doi.org/10.1108/QAE-12-2016-0089https://gcris.yasar.edu.tr/handle/123456789/5869Purpose This research aims to investigate and define the eight wastes of lean philosophy in higher education institutions (HEIs) by proposing a multi-stage model. Design/methodology/approach The authors have used a specific multi-criteria decision-making method fuzzy decision-making trial and evaluation laboratory to investigate the cause-effect relationships and importance order between criteria for wastes in HEIs. In total 22 criteria were categorized under eight wastes of lean. The study was implemented in a business school with the participation of faculty members from different departments. Findings The results showed that the most important wastes in the business school selected were repeated tasks unnecessary bureaucracy errors because of misunderstanding/communication problems excessive number of academic units and creation of an excessive amount of information. Another important result was that all the sub-wastes of talent were in the causes group while motion and transportation wastes were in the effect group.EnglishLean, Fuzzy DEMATEL, Higher education, Waste6 SIGMA, DEMATEL, CHALLENGES, HEIS, ANPArticle