(

a) It is an unlawful trust and an unlawful restraint of trade for a person to do the following:

(1) Grant or accept a letter of credit, or other document that evidences the transfer of funds or credit, or enter into a contract for the exchange of goods or services, if the letter of credit, contract, or other document contains a provision that requires a person to discriminate against, or to certify that he, she, or it has not dealt with, another person on the basis of any characteristic listed or defined in subdivision (

b) or (

e) of

Section of the Civil Code, or on the basis of a person’s lawful business associations.

(2) To refuse to grant or accept a letter of credit, or other document that evidences the transfer of funds or credit, or to refuse to enter into a contract for the exchange of goods or services, on the ground that the letter, contract, or document does not contain a discriminatory provision or certification. (

b) This

section shall not apply to a letter of credit, contract, or other document that contains a provision pertaining to a labor dispute or an unfair labor practice if the other provisions of that letter of credit, contract, or other document otherwise do not violate this section. (

c) For purposes of this section, the prohibition against discrimination on the basis of a person’s business associations does not include the requiring of association with particular employment or a particular group as a prerequisite to obtaining group rates or discounts on insurance, recreational activities, or other similar benefits. (

d) For purposes of this section, “person” shall include, but not be limited to, individuals, firms, partnerships, associations, corporations, and governmental agencies.