California Code, Business and Professions Code - BPC § 7127

(a)(1) If an employer subject to licensure under this chapter has failed to secure the payment of compensation as required by Section 3700 of the Labor Code, and whether that employer is or is not licensed under this chapter, the registrar may, in addition to any other administrative remedy, issue and serve on that employer a stop order prohibiting the use of employee labor.  The stop order shall become effective immediately upon service.  An employee affected by the work stoppage shall be paid by the employer for his or her time lost, not exceeding 10 days, pending compliance by the employer.

(2) Failure of any employer, officer, or any person having direction, management, or control of any place of employment or of employees to observe a stop order issued and served upon him or her pursuant to this section is a misdemeanor punishable by imprisonment in the county jail not exceeding 60 days or by a fine not exceeding ten thousand dollars ($10,000), or both.