2008年1月1號開始實施的第39號公報，公司必須將員工分紅從原本認列為盈餘分配改認列為費用，因此本研究假設這項公報的實施，經理人有利用配套措施操弄盈餘動機的行為；且台灣科技產業與台灣非科技產業的盈餘管理行為應有所不同。
本研究以 Modified Jones model (1995) 衡量裁決性應計項目，並以多元迴歸式與T檢定做驗證，探討經理人在有操弄盈餘動機的情況下，是否會以費用化之配套措施對公司盈餘管理行為的程度造成改變。實證結果顯示，公司的盈餘與裁決性應計項目呈正相關；營業活動的現金流量與裁決性應計項目呈負相關；管理費用與裁決性應計項目呈顯著相關；台灣電子業上市公司管理當局利用裁決性應計項目操弄盈餘的狀況顯著異於非電子業上市公司。
結果顯示，由於新規定與經理人獎酬分紅息息相關，使得經理人為追求自己利益不受侵害下，確實會以配套的措施而改變公司盈餘管理的行為。

Based on the Statement of Financial Accounting Standards No.39, the employee bonus plan is treated as an expense item rather than earnings distribution of a firm. The empirical study examines the relationship between complementary measures of expensing employee bonus plan and earnings management. This research hypothesizes that managers will have stronger incentives to manage earnings when the new regulation will start to implement. This research empirically tests the differences in earnings management behaviors between Taiwanese technology firms and Taiwanese nontechnology firms.
This research used the Modified Jones model (1995) to measure the discretionary accruals and design a regression model to testify empirical tests. This research also used pair t-test to examining the mean difference tests. The empirical results indicate that there is a significant difference between the dummy variable for industry classification and discretionary accruals. There is a significant positive relationship between discretionary accruals and earnings. There is a significant negative relationship between discretionary accruals and cash flow from operations. There is a significant difference between the discretionary accruals and administrative expenses.
There is a strong connection between new regulation and managers’ bonus. In order to protect their self-interests, the results show the changeable of earnings management behaviors.

Table of Contents
Chapter 1 Introduction 1
1.1 Background & motivation 1
1.2 Objective 3
1.3 Flow Chart 4
Chapter 2 Literature Review 5
2.1 Bonus Plan Definition 5
2.2 Taiwanese Bonus Plan 6
2.3 Earnings Management Definition 16
2.4 Relationship between Earnings Management and Bonus Plan 17
2.5 Accrual Items and Earnings Management 21
2.6 Industry Characters and Earnings Management 26
Chapter 3 Research Design 27
3.1 Research Framework 27
3.2 Hypotheses 29
3.3 Research Methods 30
3.4 Variables Analysis 31
3.5 Sample Analysis 37
3.6 Data collection 38
Chapter 4 Empirical Results 40
4.1 Descriptive Statistics 40
4.2 Results of the Pearson Correlations Tests 44
4.3 Regression Analysis: Comparison of Earnings Management 46
4.4 Multi-Collinearity Analysis 50
4.5 Results of the Mean Difference Tests 51
Chapter 5 Conclusions and Suggestions 58
5.1 Conclusions 58
5.2 Limitations 61
5.3 Suggestions 61
Reference 62
Appendix 66

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