California Code, Labor Code - LAB § 5902

The petition for reconsideration shall set forth specifically and in full detail the grounds upon which the petitioner considers the final order, decision or award made and filed by the appeals board or a workers' compensation judge to be unjust or unlawful, and every issue to be considered by the appeals board. The petition shall be verified upon oath in the manner required for verified pleadings in courts of record and shall contain a general statement of any evidence or other matters upon which the applicant relies in support thereof.