Abstract
In construction industry, construction workers face problems on aging and succession of skills. In this study, the simulation for corporate strategies to utilize direct-hired construction workers is carried out. The effects and risk in terms of succession of skills, productivity and profit/loss are quantitatively evaluated in simulating each strategy of construction corporation. It is found that direct employment strategy leads to loss due to surplus workers in less amount of awarded contract, but avoids labor shortage and skill drop. It is also clarified that a formation of Union of workers can release the risk of a corporation which lifetime employs construction workers and can expect the promotion of skill succession.
