近年來國內大企業陸續發生財務弊案後,使得投資人信心遭受嚴重的打擊,公司治理被視為改善經濟效率、提昇企業競爭力的重要因素。為了挽救投資人信心,除了希望加強公司治理外,亦需要具有公信力的專業機構,提供公司治理資訊,幫助投資人了解公司落實公司治理之具體成果。國內中華公司治理協會於94年7月8日發表了台灣第一套公司治理評量制度,作為我國資本市場用以評鑑上市上櫃公司治理現況與表現之工具,並提升我國上市上櫃公司治理制度水準及企業透明度。本研究藉由中華公司治理協會「公司治理制度評量」的認證資訊,利用差異性檢定,分析通過評鑑之公司與未經評鑑之公司於經營績效、董事會特性之差異,期可瞭解「公司治理評鑑制度」之實質效果,影響公司經營績效的因素有許多,本研究加入經營策略加以探討,有別於國內常以公司治理相關變數與經營績效之關聯性為研究課題。本研究研究期間為2005年至2009年,共有49家樣本。於經營績效的衡量,採用會計績效變數外,亦採用能反映市場價值的市場績效變數。實證結果發現,通過中華公司治理協會「公司治理制度評量」之公司,其經營績效顯著優於未經過評鑑之公司。此項實證結果更意謂,中華公司治理協會之評鑑制度確可供投資人做為投資決策之參考,亦可成為企業自發性加強公司治理的誘因。經營策略方面,對經營績效未有任何顯著之影響,乃因策略為長期性的影響,故無法僅於短期內體現於經營績效上。
In the wake of recent corporate scandals caused the investor confidence to suffer the serious attack. Therefore, the resulting focus on firms’ corporate governance mechanisms. The information asymmetry is one of the greatest reasons of the investment risk, and information is insufficient in transparency is the main reason to cause the information asymmetry. Corporate governance rating firms that produce indices which these organizations claim provide a comprehensive summary measure of the effectiveness and risks associated with firm-level corporate governance. We examine the relationship between the actual corporate governance assessment received by TCGA’s 「Corporate Governance Assessment System」during the 2005-2009. We compared accounting-based measures and market-based measures of the firms operating performance. The empirical results reveal that the investment decision-making of investors can been based on the assessment of TCGA’s. We also test the influence of diversification strategy on operation performance. The result shows that there is not significant positive effect between strategy and performance. Because the strategy is the long-term influence, .it’s unable to reflect at dealing in on the performance in a short time only.