For Businesses

Proposition 65 requires the State of California to maintain and update a list of chemicals that can cause cancer, birth defects or other reproductive harm. Businesses with 10 or more employees that expose individuals to listed chemicals through their products or operations generally must provide warnings.

This section of the website provides information to assist businesses with Proposition 65 compliance.

Frequently Asked Questions for Businesses

Learn more about Proposition 65 including the requirements, safe harbor levels and exemptions.

New Proposition 65 Warnings

New OEHHA regulations became operative in August 2018 and changed the safe harbor warnings that are deemed to comply with the law in several important ways.

Questions and Answers on New Warning Regulations

This document was developed to assist businesses in locating and understanding relevant provisions in the Article 6 Clear and Reasonable Warnings regulations.

Questions and Answers on Internet and Catalog Warnings

This document specifically addresses Proposition 65 safe harbor consumer product exposure warnings provided on the internet and in catalogs.

Sample Warnings and Translations for Businesses

The translations on this page are provided as examples of Proposition 65 safe harbor warnings in languages other than English.

Proposition 65 Warning Regulations and Recent Amendments

Read about the Proposition 65 warning regulations and recent amendments, including a side-by-side comparison.

Warning Symbol

Find links to download several sizes of the warning symbols required to be included on most safe harbor warnings for exposures to listed chemicals.

If you have any questions, comments, or concerns about the content of this page, please contact us.

In order to provide information to the public regarding exposures to listed chemicals, OEHHA may request information from businesses pursuant to Title 27, California Code of Regulations, Article 2, section 25205(b). The information provided by a business under Section 25205(b) is not a substitute for a “clear and reasonable” warning required by Health and Safety Code section 25249.6 (“The Act”). At the same time, the failure of a business to provide information requested by OEHHA under Section 25205(b) is not a failure to provide a clear and reasonable warning in violation of the Act.

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