Japanese companies may rethink their century-long trend of concentrating resources in Tokyo after the nation's record earthquake crimped power supply to the capital and radiation concern spurred some residents to flee.

Production hubs in Japan should be shifted to the western part of the country and away from the Tokyo region to minimize disruptions to the country's supply chain, Masamitsu Sakurai, head of the Japan Association of Corporate Executives, the nation's second-largest business lobby, said in Tokyo on Tuesday.

A shift in offices to Osaka and its Kansai hinterland would benefit an area that was for centuries Japan's commercial center.