Recently, workflow systems have become a hot topic as a tool for achieving paperless office work and business efficiency, Workflow systems have become a hot topic in recent years. However, some companies that are considering the introduction of workflow systems are still not sure if they will actually be able to achieve their business efficiency in terms of approvals, Can it really improve the efficiency of the approval process and other operations? Also, the sheer number of applications may make it difficult to implement a workflow system, We have also heard many questions and concerns such as "Will it really be possible to streamline the approval process? In this document, we will discuss the results of our workflow system introduction case studies, including our own, and how effective the system has been after introduction, How effective was the system after its introduction? This document introduces actual examples of how effective the system was after implementation, how long it took to implement, and so on. We hope you will find this information useful as an indicator when considering the introduction of a workflow system in your company.