Taipei, Taiwan, ROC – May 10, 2011 - United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) ("UMC" or "The Company"), a leading global semiconductor foundry, today announced that it has received the 2011 Corporate Social Responsibility (CSR) Healthy Workplace Award presented by Global Views Monthly (GVM). UMC was the only Taiwanese company to receive this award among over thirty candidates spanning the technology, finance, manufacturing, and service industries.

Celebrating its 30^th anniversary last year, UMC believes that active and healthy employees are the cornerstone of an enterprise's sustainable growth. As such, UMC set forth a comprehensive plan to build a healthy work environment that encompasses the physical and mental health of employees as well as their development within a nurturing environment and organization. The plan combines an effective foundation, extensive thinking, and concrete action to provide UMC employees with a high-quality work environment that enables all employees to grow and develop with the Company.

Moreover, to help employees prioritize their health, UMC has named May 20^th, the Company's anniversary, as Employee Health Day, leveraging the Company's resources to help employees work toward 5 action goals, develop at least 2 healthy habits, and achieve zero negative impact on health. In addition to giving each employee a pedometer as a reminder to exercise more often, UMC will also award XBOX 360, Wii and other motion-control gaming consoles to employees who achieve exercise targets.

Through these activities, UMC hopes to encourage healthy habits. UMC strongly believes that people are an enterprise's greatest asset, and only with healthy and happy employees can a company achieve the vitality for sustainable growth. Whether through organizational culture or concrete action, UMC hopes that building a healthy workplace can enable employees to collaborate and grow together in the best possible environment.

UMC (NYSE: UMC, TWSE: 2303) is a leading global semiconductor foundry that provides advanced technology and manufacturing services for applications spanning every major sector of the IC industry. UMC's customer-driven foundry solutions allow chip designers to leverage the strength of the company's leading-edge processes, which include production proven 65nm, 45/40nm, mixed signal/RFCMOS, and a wide range of specialty technologies. Production is supported through 10 wafer manufacturing facilities that include two advanced 300mm fabs; Fab 12A in Taiwan and Singapore-based Fab 12i are both in volume production for a variety of customer products. The company employs over 13,000 people worldwide and has offices in Taiwan, Japan, Singapore, Europe, and the United States. UMC can be found on the web at http://www.umc.com.