California Code, Labor Code - LAB § 1011

(a) The kind, character, or nature of the labor employed.

(b) The extent of the labor employed.

(c) The number or kind of persons exclusively employed.

(d) That a particular or distinctive class or character of laborers was wholly and exclusively employed, when in fact another class, or character, or distinction of laborers was used or employed either jointly or in anywise supplementary to such exclusive class, character, or distinction of laborers.

Violation of any provision of this section is a misdemeanor punishable by a fine of not less than one hundred dollars ($100) nor more than one thousand dollars ($1,000), or by imprisonment for not less than 20 nor more than 90 days, or both.