Occidental Petroleum to Hold Earnings Conference Call

LOS ANGELES, July 7, 2009 (GLOBE NEWSWIRE) -- Occidental Petroleum Corporation
(NYSE:OXY) will hold a conference call on Thursday, July 23, 2009, following the
release of its second quarter 2009 financial results. The conference call, which
will begin at 11:30 a.m. Eastern, may be accessed by calling 800-473-6123. 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 2009 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.

ABOUT OXY

Occidental Petroleum Corporation is an international oil and gas exploration and
production company with operations in the United States, Middle East/North
Africa and Latin America regions. Oxy is the fourth largest U.S. oil and gas
company, based on equity market capitalization. Oxy's wholly owned subsidiary,
OxyChem, manufactures and markets chlor-alkali products and vinyls. Occidental
is committed to safeguarding the environment, protecting the safety and health
of employees and neighboring communities and upholding high standards of social
responsibility in all of the company's worldwide operations.

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CONTACT: Occidental Petroleum Corporation
Media
Richard S. Kline
310-443-6249
richard_kline@oxy.com
Investors
Chris Stavros
212-603-8184
chris_stavros@oxy.com
www.oxy.com