Obeya (room) Obeya literally means a great room. It is written: 大部屋. At TOYOTA, there exists a long standing tradition called « the system or action of the great room ». It is a traditional method where those making decisions and the department managers of Design, Technical, Purchasing and Suppliers, etc...all meet in just one room during the elaboration of new models to put together a work team. The goal of the Obeya system is that of having the best communication, quick decisions and zero-changes of the plan at launch time. Additionally, it is equally used to reunite machines or job positions or support services in just one location.