In the chemical industry, the members who join in the production activity make efforts to improve the productivity of the plant every day. And it is possible to evaluate the productivity with the return of sales and the cost of production. Nevertheless, the human factors in the production cost concern in not only the labor cost but also the skills and knowledge of the production plant personnel. Moreover, the skills and knowledge of production plant personnel affect the resilience that is the capability to restrain a lot of disruptive signals occurred in and out of the production process. The value of skills of the production plant personnel has already been estimated based on the real measured work hours, and the work hours are classified into three types of skills according to the method of self-estimation. This procedure derives three types of resilience. In this paper, this method is expanded to estimate quantitatively the skills of the plant manager who supervises the production process. This quantitative estimation of the skills of the plant manager that contains the resilience as the index of capability will help the improvement of the quality of the daily routines and the resilience of the production process.