本文使用台灣中央研究院社會學研究所1997年與2002年「台灣地區社會變遷基本調查計劃」的資料，估計過度(不足)教育對薪資報酬的影響，並嘗試利用圖形解釋分析過度教育所造成的個人與社會無謂損失。使用最大概似法估計薪資迴歸式，以解決過去因刪除無工作樣本所造成的選擇性偏誤問題。在過去的文獻中，除了林侑政(2009)之外，皆都假設全職工作者與兼職工作者擁有相同的薪資迴歸式，本文嘗試把薪資迴歸式分為全職工作者之薪資迴歸式與兼職工作者之薪資迴歸式，並且分別檢定職需教育與過度(不足)教育年數之薪資邊際報酬率是否有顯著的差異。
本文主要的結論：(1)全職與兼職工作者之過度教育年數的薪資邊際報酬率為正的，但會小於職需教育年數的薪資邊際報率。這意謂著過度教育會對個人或整個社會都造成無謂損失(2)全職與兼職工作者之不足教育年數的薪資邊際報酬率皆為負的(3)全職與兼職工作者之職需教育年數薪資邊際報酬率與過度(不足)教育年數薪資邊際報酬率皆有顯著的差異。

This thesis tries to estimate the effect of overeducation(undereducation) on wages by using the data sets “Taiwan Social Change Survey” in 1997 and 2002. It also analyzes graphically about the deadweight loss of overeducation of an individual and the whole society. The wage equations are estimated by the Maximum Likelihood Estimation(MLE) to take into account the sample selectivity bias problem caused by deleting non-workers sample. The existing literature, with the exception of You-Jheng Lin(2009), usually assumes that the full-time workers and part-time workers have the same wage equation. This thesis deals with this problem by estimating two wage equations, one for full-time workers and the other for part-time workers. Then, it also tests whether there is a significant difference between the marginal rate of returns of required and excess(deficit) years of schooling.
The main conclusions are as follows: First, the marginal rate of returns on excess years of schooling(overeducation) is positive, but less than that of required years of schooling(adequacy in education) for both the full-time and part-time workers. And it indicates that overeducation will lead to the deadweight loss for an individual or the whole society. Second, for both the full-time workers and part-time workers, the marginal rate of returns on deficit years of schooling(undereducation) is negative. Third, there is a siginificant difference between the marginal rate of returns of the full-time workers and that of the part-time workers on required years and excess(deficit) years of schooling.

第一章 緒論
第一節 研究背景與動機
第二節 研究目的
第三節 研究貢獻
第四節 研究架構

第二章 文獻回顧
第一節 過度教育的定義
第二節 測量職需教育之方法
第三節 教育如何影響薪資報酬的估計方法

第三章 理論模型
第一節 薪資所得模型－採用最大概似法估計
第二節 無謂損失(DEADWEIGHT LOSS, DWL)－採用圖形分析
第三節 估計過度教育所造成之無謂損失理論模型－採用最大概似法

第四章 資料來源與分析
第一節 資料來源、選取、與變數定義
第二節 樣本資料敘述統計

第五章 實證結果
第一節 薪資模型-使用最大概似法(MLE)估計的實證結果
第二節 參數值的檢定

第六章 結論與建議

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