Abstract
In recent development of the Japanese human resource management, the new practices such as performance-based evaluation and flexible work hour systems are gradually gaining ground, while such traditional management styles as life time employment and the seniority based evaluation are being phased out Taking these into consideration, I would like to put some of my thoughts, from the historical perspectives and based on my own management experiences at NEC, on the effects that the pyramid type and/or flat type organizations have toward the human resource management as well as on the shifts in employees' organizational behavior which are brought about by the motivation measures through the personnel evaluation and the mentor systems.