The purpose of a series of research on faults & troubles by authors is to suggest fundamental data in order to investigate maintenance scheme, especially, maintenance system or human resource in both office building and hospital. In this paper, labor load by maintenance personnel about restoration work of faults & troubles is newly defined as “maintenance load” and it is found that as maintenance load increases, a percentage of newly occurred numbers of put-off to the next day, or, put-off rate, increases using the 28,122 numbers of faults & troubles data. Furthermore, it is found that term to restoration depends on put-off by busyness of maintenance personnel with technical difficulty, etc. and effect of put-off on mean term to restoration is investigated schematically.
