California Code, Labor Code - LAB § 3701.3

The director shall return to a private self-insured employer all individual security determined, with the consent of the Self-Insurers' Security Fund, to be in excess of that needed to ensure the administration of the employer's self insuring, including legal fees, and the payment of any future claims.  This section shall not apply to any security posted as part of the composite deposit, or to any security turned over to the Self-Insurers' Security Fund following an order of default under Section 3701.5.