為了協助外部報表使用者得以瞭解公司各營運單位的風險與價值創造力，我國自2011年1月1日隨即實施財務會計準則公報第41號公報「營運部門資訊之揭露」，規定企業由過去「產業法」改為「管理法」來辨認並衡量營運部門績效。本文之首要目的即在檢測我國企業採用管理法成效。其次，本文進一步探討「專屬資訊成本」及「董事會治理成效」兩因素之調節效果。本文以2011年為基準，以手工方式搜集2009年下半年至2012年上半年上市公司之營運部門財務資料。實證結果指出，在實施管理法之後：(1)平均而言，我國企業營運部門報導的品質有提升；(2)專屬資訊成本越高的企業，營運部門報導品質反而表現越差；(3)董事會治理成效越佳企業，營運部門報導的品質表現越佳。

Taiwan’s Financial Accounting Standards Committee adopted the Statement of Financial Accounting Standard (SFAS) No.41 on January 1, 2011, in order to help users of the financial statements to better understand the potential risk and value of different segments. Firms thus need to reveal more about their various business segments after switching from an industry-based approach to a management-based approach. The first purpose of this study is thus to examine whether the management approach increases the quality of business segment reporting. In addition, this study also extends prior works and investigates the effects of “proprietary cost” and “board governance” on the quality of business segment reporting. Using a sample from the second half of 2009 to the first half of 2012, for a total of six half-year periods, this study hand-collected segment financial data to measure the quality of segment disclosure. The results indicate that: (1) on average, adopting the management approach improves the transparency of business segment reporting; (2) firms with high proprietary costs will have a lower quality of business segment reporting; (3) firms with good board governance will have a higher quality of business segment reporting.

本研究探討我國財務會計準則第41號公報，將營運部門報導方法由「產業法」改為「管理法」，對於企業營運部門報導品質之影響效果，以台灣2009年下半年至2012年上半年上市公司為樣本，實證分析後發現，企業採用管理法後，營運部門的報導品質有顯著提升。本研究之結果隱含，企業採用管理法相較於產業法，降低企業內部及外部報表使用者財務資訊不對稱現象，提高外部報表使用者評價企業在多角化經營環境所帶來的潛在風險與獲利能力。因此，本研究能提供管制者評估第41號公報實施成效的重要參考依據。 本研究實證結果也發現，電子業中專屬資訊成本越高的公司，就算第41公報強制規範企業依管理法精神揭露營運部門資訊，企業仍然會依循該公報給予的裁量空間，盡可能減少營運部門資訊的揭露。然而，當公司有健全的董事會治理機制來搭配時，能有效提升提董事會監督管理者財務報導行為，此時營運部門財務揭露的品質較佳。此結果在實務管理上有以下意涵。一、鑑於我國仍有多數公司採用單一營運部門說法，降低營運部門報導品質，為了提升財務報表資訊透明度，在政策上，本研究建議我國在全面採行國際會計準則公報之際，應加強會計相關人員對於新公報規定的教育訓練，充份與企業溝通提升財務報表資訊透明度的效益，例如：減少編製額外報表的成本或取得較佳融資條件等，要求企業確實落實相關會計準備的規範。二、管制者也可以從健全董事會治理機制著手，此機制能發揮董事會監督管理者營運部門財務報導揭露行為，俾能保障廣大投資者之基本利益。 最後，會計師在查核專屬資訊成本較高公司時，應加強注意企業營運部門的揭露是否合理及是否允當，俾能傳遞給投資人更具可靠性之財務資訊。同時，投資人在使用營運部門資訊作投資決策時，可以進一步考量「專屬資訊成本」及「董事會治理成效」等因素之影響，適當地調整該盈餘資訊決策的權重。

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