We carried out an investigation to clarify the relationships between near-miss incidents and human errors based on actual incidents at telecommunication construction sites based on the findings of the previous report. We analyzed (1) the tendency of the age-specific report items of indoor and outdoor telecommunication construction sites and (2) the relationship of “slip and trip” to “work contents” and four mental and physical functions. In the18-30 year-old group engaged in indoor construction, there were many incidents involving “stepladder work” and reports in “the floor panel opening”. In the 31-50 year-old group, many incidents of “damage ca ble/loosening cable” and “improper connection and erroneous contact” were found. In the 18-30 year-old group engaged in outdoor construction, there were many incidents involving “fall” and “slip and trip”, and in the 51-60 year-old group and over 60 year-old group, there were many incidents of “while driving an automobile”. Among the four mental and physical functions, “step ladder work” during indoor construction had a close relationship with “work behaviour”, and also “work behaviour” and “feelings and emotion” had a close relationship with outdoor con struction sites. The results suggested the need to advance accident prevention education on the basis of data gained from actual near-miss incidents.
According to the law revised in April 2013 in Japan, employers are obliged to employ all those who so wish to continue to employ until age 65. This reflects the recognized active roles of aged people as workforce, particularly for transferring technical skills to younger generations and to support business operations. Interview results of elderly workers including those in their 50s revealed difficulties in keeping their motivation for competent work. As a countermeasure, we attempted to “visualize” contributions and enthusiasm of aged workers including those for support tasks and publicize their exemplary roles in the intranet portal sites. These activities indicated the importance of visualizing the competencies of aged workers and developing career plans in their 60s. It is suggested to spread these activities in the company with a focus on visualizing the roles of aged workers.