Canadian Broadcasting Corporation | Australian Broadcasting Corporation | Oracle Corporation | International Finance Corporation | Chevron Corporation | Digital Equipment Corporation | News Corporation | Lockheed Corporation | corporation | Hearst Corporation | Scholastic Corporation | Northrop Corporation | Munhwa Broadcasting Corporation | Gibson Guitar Corporation | CBS Corporation | Fender Musical Instruments Corporation | ITT Corporation | Sharp Corporation | RAND Corporation | NCR Corporation | Federal Deposit Insurance Corporation | Sperry Corporation | Singer Corporation | Case Corporation | Science Applications International Corporation | Polaroid Corporation | Multinational corporation | Burroughs Corporation | Bendix Corporation | Olympus Corporation |
Before continuing with his graduate education he worked for the Meyer Corporation, the Dravo Corporation, and the Bechtel Corporation as an engineer.
For four years, Ergun worked at Bechtel Corporation as consultant in the field of Waste-to-Oil process development.