Rakuten is planning to make English its official corporate language by 2012. As a large Japanese company with over 6,000 global employees and operations in other countries, Rakuten believes adopting English will help it better communicate internationally and understand global business trends. However, requiring strong English skills could disadvantage some long-term Japanese employees without sufficient language abilities from advancing in the company. The document discusses Rakuten's reasons for the change to English and some of the potential challenges it presents.