California Code, Business and Professions Code - BPC § 5499.30

(a) Any individual, firm, corporation, partnership, organization, or association which prints, displays, publishes, distributes, or broadcasts or causes or permits to be advertised, printed, displayed, published, distributed, or broadcast any advertising which purports to provide legal services for obtaining workers' compensation benefits shall include the name of at least one attorney associated with the individual, firm, corporation, partnership, organization, or association in all such advertising.

(b) As used in this section, the term “legal services” includes any service which refers potential clients to any attorney.

(c) A violation of this section is a misdemeanor, punishable by imprisonment in the county jail for not more than one year, or by a fine not exceeding ten thousand dollars ($10,000), or both.