California Code, Labor Code - LAB § 7374

(a) The division may suspend or revoke the permit of a crane where the employer engages in gross negligence, gross incompetence, or willful or repeated disregard of any occupational safety standard or order involving the crane.

(b) The permit of the crane shall be suspended or revoked for a six-month period for first-time suspensions or revocations, and for a one-year period for each subsequent suspension or revocation. The division shall establish a suspension and revocation hearing procedure and appeal process.