Cal. Civ. Code § 1747.20

If 10 or more credit cards are issued by one card issuer for use by the employees of an organization, Section 1747.10 does not prohibit the card issuer and the organization from agreeing to liability for unauthorized use without regard to Section 1747.10. However, liability for unauthorized use may be imposed on an employee of the organization, by either the card issuer or the organization, only in accordance with Section 1747.10.