Cal. Lab. Code § 64.5

When requested by the State Board of Equalization, the department may permit any duly authorized representative of that agency to transmit to the State Board of Equalization information available in the department’s records that indicates a retail establishment is operating without a seller’s permit required by the State Board of Equalization, to assist the State Board of Equalization in determining compliance with the Sales and Use Tax Law (Part 1 (commencing with Section 6001) of Division 2 of the Revenue and Taxation Code).