The purpose of this paper is to make a proposal for the supply-chain-management, particularly in the phase of unprecedented disaster. Even now, the coordinated behavior on the basis of inter-organizational trust is still important for recovering from emergency. In fact, Renesas Electronics, the largest micro-controller manufacturer in Japan, and its customers have indicated their rigid partnership in 2011. However, there was another fact that the coordinated behavior was not always sufficient for saving supply-chain. For instance, the production, without alternative manufacturer like a specified semiconductor, could not been saved just by the partnership. Therefore, we have to investigate the risk management for supply-chain again because the trend of electrification and computerization for automobiles requiring a lot of semiconductors has been proceeding for a long time. The most important thing is to consider newer risk management with sophisticated incentive system for all players in that industry.