Cal. Gov. Code § 4533

Whenever the state prepares a solicitation for a contract for goods in excess of one hundred thousand dollars ($100,000), except a contract in which the worksite is fixed by the provisions of the contract, the state shall award a 5-percent preference to California-based companies who demonstrate and certify under penalty of perjury that of the total labor hours required to manufacture the goods and perform the contract, at least 50 percent of the hours shall be accomplished at an identified worksite or worksites located in a distressed area.