2009 2010 2011 Employees Technical  14,061 13,879 13,959  Operations  9,133 9,189 9,336 Administrative  1,474 1,406 1,369 Total  24,668 24,474 24,664 As of December 31, 2011, approximately 73% of our employees had university, graduate or post-graduate degrees. To  improve our operational efficiency by reducing personnel costs, we offered a number of voluntary retirement programs between June  1, 2000 and December 31, 2011, which resulted in a reduction in our workforce of approximately 12,193 employees.  The following table is a breakdown of our employees from 2009 to 2011 on a non-consolidated basis.  As of December 31, 2011, approximately 99% of our employees on a non-consolidated basis were members of our principal  labor union. Our collective agreement sets forth work rules, grievance procedures and provides for union participation in performance  evaluations and promotion decisions. Our union members also occupy a majority of the seats on our employee welfare and pension  fund committees. In addition, we will continue to maintain a good relationship with our labor union. We strive to have good  communication with our employees and the labor union by inviting representatives of our labor union to attend various meetings  related to the performance of our employees.  Pursuant to our articles of incorporation, our employees are entitled to 2% to 5% of the distributable earnings as employee  bonuses. Our practice in the past to determine the amount of the bonus has been based on the operating results. In the fourth quarter  of 2011, we distributed an aggregate bonus to our employees of NT$2.1 billion. Since the change in accounting regulations requiring  bonuses in the form of stocks be recorded as an expense at their market value instead of their par value, we instead decided to  distribute cash bonuses.  As of March 31, 2012, our directors, supervisors and executive officers personally held an aggregate 593,078 shares of our  common shares, representing around 0.01% of our outstanding common shares. The following table sets forth information with  respect to the beneficial ownership of our common shares as of March 31, 2012 by each of our directors, supervisors and executive  officers.  P AR T I E. Share Ownership Name Number % Shyue-Ching Lu  * * Shaio-Tung Chang  * * Shih-Peng Tsai  Shu Yeh  * * Chi-Mau Sheih  * * Yen-Sung Lee  * * Mu-Piao Shih  * * Yuan-Kuang Tu  * * Min-Hsuan Lin  * * Chang-Rong Chen  * * Fu-Kuei Chung  * * Hsiu-Gu Huang  * * Tai-Feng Leng  * * *  Stockholder beneficially owns less than 1.0% of our outstanding common shares.  100