May 13, 2008 - The Occidental Petroleum Corporation's 2007 Corporate Social Responsibility Report, released today at: http://www.oxy.com/sr focuses on social responsibility, health, environment and safety (HES) policies, objectives, performance and activities of the company and its subsidiaries (collectively, Oxy).

To improve and expand upon our social responsibility reporting, Oxy adopted six reporting principles to guide structure and content.

• Integration and Alignment. Demonstrate how social responsibility is embedded in our business practices.


• Context. Present performance results in relation to broader social issues important to stakeholders.


• Transparency. Provide clear, understandable, factual information.


• Significance. Address important business issues, impacts and stakeholder questions.


• Credibility. Offer supporting information and examples.


• Address Stakeholder Expectation. Provide meaningful and valuable information to our stakeholders.

Visit http://www.oxy.com/sr to view the report. Or email http://www.oxy.com/publicationrequest for a hard copy of the report.

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. Oxy 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.

Occidental Petroleum Corporation (OXY)

Occidental Petroleum Corporation (OXY)

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. Oxy 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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