It shall be an unfair labor practice for a labor organization or its agents to do any of the following:
Nothing contained in this subdivision (d) shall be construed to prohibit publicity, including picketing for the purpose of truthfully advising the public, including consumers, that a product or products or ingredients thereof are produced by an agricultural employer with whom the labor organization has a primary dispute and are distributed by another employer, as long as such publicity does not have an effect of inducing any individual employed by any person other than the primary employer in the course of his employment to refuse to pick up, deliver, or transport any goods, or not to perform any services at the establishment of the employer engaged in such distribution, and as long as such publicity does not have the effect of requesting the public to cease patronizing such other employer.
However, publicity which includes picketing and has the effect of requesting the public to cease patronizing such other employer, shall be permitted only if the labor organization is currently certified as the representative of the primary employer's employees.
Further, publicity other than picketing, but including peaceful distribution of literature which has the effect of requesting the public to cease patronizing such other employer, shall be permitted only if the labor organization has not lost an election for the primary employer's employees within the preceding 12-month period, and no other labor organization is currently certified as the representative of the primary employer's employees.
Nothing contained in this subdivision (d) shall be construed to prohibit publicity, including picketing, which may not be prohibited under the United States Constitution or the California Constitution.
Nor shall anything in this subdivision (d) be construed to apply or be applicable to any labor organization in its representation of workers who are not agricultural employees. Any such labor organization shall continue to be governed in its intrastate activities for nonagricultural workers by Section 923 and applicable judicial precedents.
Nothing in this subdivision shall be construed to prohibit any picketing or other publicity for the purpose of truthfully advising the public (including consumers) that an employer does not employ members of, or have a contract with, a labor organization, unless an effect of such picketing is to induce any individual employed by any other person in the course of his employment, not to pick up, deliver, or transport any goods or not to perform any services.
Nothing in this subdivision (g) shall be construed to permit any act which would otherwise be an unfair labor practice under this section.
Ca. Lab. Code § 1154