Abstract
It is important for the project success that project members are willing to surely complete their mission. The words, commitment and motivation, are often used to describe such consciousness of project members. This paper summarizes the meaning of commitment used in various fields and discusses the difference between motivation and the commitment defined in this paper. This paper also discusses the anticipated positive effect of the commitment in a project and shows the survey result indicating the positive effect of commitment appeared in project members' mind after the commitment is applied to the large scale project. When the commitment is applied to the cross functional team consisting with representative of functional organizations, the improved sense of responsibility can be deployed not only to the project members but also to the whole organization. Commitment can be used as an effective tool for the organizational change.
