GBC Upgrades Staff To Improve Productivity In order to be abreast of advances in technology, GBC continues to upgrade the knowledge of staff to enhance productivity. As a result, the Corporation has held a three day duty course for its telephone exchange staff at Broadcasting House in Accra to enable them work with new equipment. The Deputy Director of Human Resource, Ben Richman charged the staff to bring what they have been taught to bear on their work to project the image of GBC. Source: GBC