California Code, Labor Code - LAB § 9020

(a) Pursuant to Chapter 6 (commencing with Section 140) of Division 1, the standards board shall adopt standards for carcinogens at least as restrictive as the federal requirements for use of carcinogens promulgated under Section 6 of the Occupational Safety and Health Act of 1970 (P.L. 91-596), as these federal requirements may be revised from time to time. Within six months after the effective date of any change in the federal requirements, the standards board shall amend its standards as necessary to comply with this subdivision.

(b) It is the intent of the Legislature that the state shall exercise strong leadership in preventing employees, employers, and other persons from being exposed to carcinogens. In this connection, it is the further intent of the Legislature that the standards board adopt standards for substances as to which there exists a preponderance of evidence of carcinogenicity, but for which the federal government has not yet promulgated requirements specified in subdivision (a). The division shall determine the necessity for the standards and shall develop and present the proposed standards to the standards board pursuant to Section 147.1.