California Code, Financial Code - FIN § 14950

(a) Every credit union may enter into obligations with its members upon the approval of the credit committee or, in the alternative, the credit manager, subject to the terms and conditions established by the board of directors pursuant to Section 15100.

(c) Notwithstanding subdivision (a), a credit union may permit a nonmember to participate in an obligation or extension of credit to a member as a joint applicant, co-obligor, coborrower, surety, or guarantor. An obligation or extension of credit made pursuant to this subdivision shall not be deemed a violation of subdivision (b) of Section 14800. Except as otherwise permitted by statute or regulation, the credit union shall not extend any other benefit or service of the credit union to the nonmember solely as a result of participation as a joint applicant, co-obligor, coborrower, surety, or guarantor unless the nonmember is thereafter admitted to membership.