news releases

Occidental to Hold Earnings Conference Call

LOS ANGELES, July 7, 2005 -- Occidental Petroleum Corporation (NYSE:OXY) will hold a conference call on Friday, July 22, 2005, following the release of its second-quarter 2005 financial results. The conference call, which will begin at 11:30 a.m. EDT, may be accessed by calling 1-888-873-8496. The conference call also can be heard live on the company's website, www.oxy.com.

All remarks made during the conference call will be current at the time of the call and will not be updated to reflect subsequent material developments.

Second-quarter financial results will be available through the Investor Relations section of the company's website concurrent with the SEC filing. An archived edition of the conference call also will be available on the website within several hours after the call is completed.

CONTACT:  Occidental Petroleum Corporation
          Lawrence P. Meriage (media)
          310-443-6562

          Kenneth J. Huffman (investors)
          212-603-8183
          www.oxy.com