HSINCHU, Taiwan, March 14, 2008 - UMC, a leading global semiconductor foundry, today announced that its corporate social responsibility (CSR) report has received a Level A grade from Global Reporting Initiative (GRI), signifying that UMC's CSR report is aligned with G3 Sustainability Reporting Guidelines. UMC is the first company in Taiwan to achieve this standard.

The A grade demonstrates that UMC's CSR report disclosure level meets GRI's stringent international guidelines. The accomplishment also illustrates UMC's emphasis on communication with stakeholders and information transparency, which enables UMC to maintain its position as a world-leading corporation.

UMC began publishing annual corporate environmental reports (CER) in 2000. In 2006, UMC evolved its CER into CSR to include the company's efforts and achievements in environmental protection, corporate governance and social events participation. GRI introduced its G3 Sustainability Reporting Guidelines in October 2006, and UMC's next CSR report that was released in 2007 earned GRI's highest grade. The Level A grade demonstrates UMC's determination to be considered an international leader in the CSR field.

UMC has put forth significant efforts in every aspect of CSR over the years, with successful results that have recently gained worldwide recognition. In addition to publishing its CSR report every year, UMC has a dedicated CSR web page on the company's official website to disclose related policies and achievements in CSR.

UMC's CSR report can be found at:
English: http://www.umc.com/English/about/CSR_v_5.asp
Chinese: http://www.umc.com/chinese/about/CSR_v_5.asp

UMC (NYSE: UMC, TSE: 2303) is a leading global semiconductor foundry that manufactures advanced system-on-chip (SoC) designs for applications spanning every major sector of the IC industry. UMC's SoC Solution Foundry strategy is based on the strength of the company's advanced technologies, which include production proven 90nm, 65nm, 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 approximately 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.