At one of employee education methods, necessary technology, it is the education and training which makes learn ability, knowledge or attitude and sense of value etc. via actual work.

Proper OJT as it is called in the world of personal study the manager the fact that intend/deliberate guidance rearing is done man to man vis-a-vis the subordinate, is defined via duty accomplishment, the methodology such as listing up the ability important matter and drawing up the training time table talks, but generally always the superior does not do when and, when planned characteristic is thin including and the like,, broader "workplace guidance" there is many a thing which is used in the meaning.

There is many a thing which is the tacit knowledge where know-how and the work flow which stick to business, the business knowledge whose peculiarity is high, secret and main point etc. of duty accomplishment exist in only actual place of duty, in additionbecause the to documentationmanual are converted, OJT is necessary. In addition, the importance of OJT is emphasized even in the surface such as continuous levelling up of the organizational ability with company's tradition and the enterprise culture which grow the person.

Until recently, there was many a thing where the viewpoint of young education talks, but recently also OJT