Cal. Insurance Code § 1871.8

An insurer or self-insured employer shall provide the following notice, in both English and Spanish, to an injured worker on or with a check for temporary disability benefits: WARNING: You are required to report to your employer or the insurance company any money that you earned for work during the time covered by this check, and before cashing this check. If you do not follow these rules, you may be in violation of the law and the penalty may be jail or prison, a fine, and loss of benefits. ADVERTENCIA: Es necesario que usted le avise a su patrón o a su compañía de seguro todo dinero que usted ha ganado por trabajar, durante el tiempo cubierto por éste cheque, y antes de cambiar éste cheque. Si usted no sigue estos reglamentos, Usted puede estar en violación de la ley y el castigo podría ser cárcel o prisión, una multa, y pérdida de beneficios.