With respect to the organizational structure of the maintenance area, not all companies have a consolidated department, and the terms are usually subordinated to other
areas, commonly engineering or production. In 47.89% of cases, it was noticed that maintenance department has a formal structure, including management positions and other
technical functions. Related to education level of maintenance staff, 64.29% of
the companies assumes that 20% or less of their staff have high graduation which can be
considered a low qualification level, i.e., the majority of people in this area has no upper level having only technical skills. Only 5.71% of the companies assume that around 81-
100% of their staff has high graduation, as shown by Fig. 11.