支払方式の選択による最適契約メカニズム

抄録

Although the trade-off between the cost and the quality in public construction works should be optimized, the open and competitive bidding procedure could give us the lower quality as well as the lower price. This paper proposes an optimal contract mechanism to cope with the above issue. The mechanism is designed to give us the maximum total utilities by having contractors select a payment system out of three choices that are cost plus fee with fixed percentage contract, quantity based contract, and fixed price contract. The contractors can consider their own cost and quality incentives through selecting a payment system. The significance of the mechanism is the idea to maximize the total utilities of the projects through the contractors' discretion.