This article examines the differences in the concept of the corporatio
n and their possible implications for corporate performance, between J
apan on the one hand and the United States and Europe (Germany, UK and
France) on the other. The Japanese concept is used as the standard ag
ainst which the other models are compared. The concept of the corporat
ion is defined here as the answer to the question: 'In whose interest
should the firm be managed?'(1) This is the foundation on which corpor
ate governance and the monitoring system for the CEO is built. The ana
lysis is focused on large publicly-held corporations with widely diffu
sed ownership.