在現今與時俱進的社會中，為了達成多樣化的行政目的，會選擇以其他新型態的組織體代替傳統之行政組織來進行行政任務。在現行之組織體中，可供選擇的組織態樣包括行政機關、行政法人、國營事業以至於民營企業。至於該選擇哪一種組織型態以符合其行政目的，沒有一定的標準，法律亦無明文規定，原則上政府有選擇何種型態為最佳的權利。 在桃園航空站改制成國營公司之後，從原本得行使公權力之行政機關，變成無公權力可行使之機構。在其改制之後，對公司內部人員之法律關係，以及對外部組織之合作關係，是否發生變化？又這些變化是否會影響其相關業務之執行？又國營事業仍屬政府掌控及監督之組織，如有侵害人民相關權利及利益，是否有國家賠償法之適用？是否可以尋求行政爭訟以資救濟？這些問題都是本文欲探討之處。 桃園國際機場的改制，只是政府將交通建設進行企業化管理的第一步。台灣尚有十六個機場，如欲進行改制，在法制面上應注意哪些事項，而桃園國際機場是否應進一步走向民營化，也將作為本文之結論。 / In order to achieve diversified administrative purposes, the government will choose the other new types of organizations for administrative tasks to replace the traditional administrative organizations with this time. Among the different type of organizations currently in operation, alternative organizational forms include administrative organs, independent administrative institution, state-owned enterprises and private-owned enterprises. There is no certain standard regarding to which type of organization to choose for the administrative purposes, and there is no express statutory provision in the law. In principle, the government has the right to choose which one is the best choice. After Taoyuan Airport was transformed into a state-owned company, the change is from the executive organ that originally had to exercise public power turned into an organization that could exercise no public authority. After its restructuring, is there any change of the legal relationship of the company's internal staff, as well as the cooperation with external organizations? Will these changes affect the implementation of its related business? Owing to the state-owned enterprise still an organization which controlled and supervised by the government, is there any application of the State Compensation Law if it infringes on people's rights and interests? Otherwise, can we seek administrative litigation in order to provide relief? These questions will be explored in the text. The reform of Taoyuan International Airport is only the first step toward the government-led management of transport construction. There are still 16 airports in Taiwan. To reform the system, what matters should be noted on the legal system and whether the airport should be further privatized, these 2 issues will be the conclusion of this article.

本論文從現代行政法學方法論所獲得之考察角度，以個別社會保障制度之給付型態及規律構造為基礎，分析給付主體（行政）與受給者（私人）間，不限於行政處分意義之「給付決定」與「私人權利」之關係，並考慮供給主體多元化之給付關係之狀況。分析順序，先從我國法社會保障給付作用之法律構造（實定法、裁判例）設定課題，次以日本法為比較法，整理日本行政法或行政法學對於所設定課題之回應。最後，從前揭行政領域之議論，發現、汲取構想現代給付行政法學方法論（以行為形式與法律關係為主軸）之線索，並展望對應給付行政法之特色，建立其法體系之可能。