公共工程執行過程中，經常會由於業主延遲交付工地、惡劣天候、工程變更等各種所無法預期之狀況，而使工期產生遲延。因非可歸責於承包商之事由所導致之遲延，承包商會向業主要求展延工期，並對因工期展延所增加之成本提出補償請求。然而，國內公共工程合約對於工期展延時可補償項目與相關管理費之合理比例，大多缺乏相關規定，因此容易衍生履約爭議。
本研究透過文獻探討及專家訪談，並就相關案例進行分析，結果顯示國內於處理工期展延管理費補償時，有對非可歸責雙方因素造成之工期展延仍給予承包商管理費補償、未考量不同展延情形對管理費支出的影響、對變更設計部分重複補償管理費等問題，部分案例處理之合理性與嚴謹性不足，有待改善。本研究針對工期展延管理費補償現況問題，參考國外相關規範與處理方式，將可列入補償計算天數、管理費比率調整、不同展延情形等影響因子納入考量，以建構「工期展延管理費補償計算模式」，較諸現行的簡單比例法計算方式，更能切合工程實際情況，對於管理費補償計算之結果亦較為合理。

It is generally recognized that construction delays is critical in public construction projects. Contractors may claim incurred costs for excusable and compensable delays. However, the compensation of overhead damages for owner caused construction delay is not specified in most public construction contacts. And it often leads to contract disputes due to the lack of effective settlement approaches. Therefore, it is imperative to develop methods for calculating overhead claims for damages due to construction delay. Unabsorbed overhead is a significant cost to contractors and needs to be addressed in an expeditious manner by owners and their representatives. The objective of this study is aimed to assist in the quick and efficient calculation of the appropriate compensation due a contractor for an owner caused increase in the project duration.
In this study, key issues and the major problems encountered in the calculation of damage of compensable delay of public construction were investigated first through extensive interviews with leading experts. Then, various approaches for compensable damage with relate to the cost items that may incur due to owner caused delay are compared and analyzed. Furthermore, cases study (including 30 mediation cases and 21 litigation cases ) are conducted to explore the current practices of calculating overhead claims for damages due to project delay. It is concluded that there are significant discrepancies in mediation and litigation with regard to the determination of jobsite overhead by the over-simplified proportion method. Based on the results, guidelines of appropriate compensation for owner caused construction delay are established. Taking account of the circumstances of the construction delay and the related expenses incurred, a modified method of pricing allocable overhead for dispute resolution is developed consequently.

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