CBS Corporation To Report Second Quarter 2007 Earnings On Tuesday, July 31

CBS Corporation (NYSE: CBS.A and CBS) announced today that it will report results for the second quarter of 2007 on Tuesday, July 31, 2007. The Company will conduct a teleconference call at 8:30 AM, ET, following the release of its earnings announcement. The call is open to the general public.

The domestic conference call number is (877) 704-5384; please call five minutes in advance to ensure that you are connected prior to the presentation. The international dial-in number is (913) 312-1297. A live audio webcast of the call will also be available on the home page of CBS’s corporate website, www.cbscorporation.com, beginning at 8:30 AM, ET, on July 31. Please make sure you have the appropriate software — Windows Media Player or realPlayer — at least 15 minutes prior to the call. The downloads will be available on CBS’s corporate website.

A replay of the call will be available beginning at 12:30 PM, ET, on July 31 at (800) 839-4276. The international replay number is (402) 220-1735. The audio webcast replay will be available beginning at 12:30 PM, ET, on July 31 in the Investor Relations/Presentations section of CBS’s corporate website