Industrial safety activities are roughly divided into two types: activities to take measures for “direct factors” and for “latent factors”. Activity which may be mentioned as measures against latent factors is the near-miss activity. How to use the data of near-miss is that they select the required data on the basis of intuition and experience and reflect it in the field activities. However, measures against direct factors have priority over latent factors, and the measures against latent factors often do not work. There are large differences in the quality of the extracted data and the proposal of the activities between the experienced manager/skilled person and the inexperienced employee. Therefore, the aim of this study is to make aware of the lack of view and to help inexperienced employee extend measures against direct factors to against latent factors by encouraging them to systematically understand the methods and activities.