California Code, Business and Professions Code - BPC § 6410

(a) Every legal document assistant or unlawful detainer assistant who enters into a contract or agreement with a client to provide services shall, prior to providing any services, provide the client with a written contract, the contents of which shall be prescribed by regulations adopted by the Department of Consumer Affairs.

(b) The written contract shall include all of the following provisions:

(c) The contract shall be written both in English and in any other language comprehended by the client and principally used in any oral sales presentation or negotiation leading to execution of the contract.  The legal document assistant or the unlawful detainer assistant is responsible for translating the contract into the language principally used in any oral sales presentation or negotiation leading to the execution of the contract.

(d) A written contract entered into on or after January 1, 2016, shall contain a statement that, pursuant to Section 6409.1, the venue for an action arising out of a dispute between a legal document assistant or unlawful detainer assistant and their client shall be the county in which the client has their primary residence.

(e) Failure of a legal document assistant or unlawful detainer assistant to comply with subdivisions (a), (b), (c), and (d) shall make the contract or agreement for services voidable at the option of the client.  Upon the voiding of the contract, the legal document assistant or unlawful detainer assistant shall immediately return in full any fees paid by the client.

(f) In addition to any other right to rescind, the client shall have the right to rescind the contract within 24 hours of the signing of the contract.  The client may cancel the contract by giving the legal document assistant or the unlawful detainer assistant any written statement to the effect that the contract is canceled.  If the client gives notice of cancellation by mail addressed to the legal document assistant or unlawful detainer assistant, with first-class postage prepaid, cancellation is effective upon the date indicated on the postmark.  Upon the voiding or rescinding of the contract or agreement for services, the legal document assistant or unlawful detainer assistant shall immediately return to the client any fees paid by the client, except fees for services that were actually, necessarily, and reasonably performed on the client's behalf by the legal document assistant or unlawful detainer assistant with the client's knowing and express written consent.  The requirements of this subdivision shall be conspicuously set forth in the written contract.