Cal. Lab. Code § 3701

(a) Each year every private self-insuring employer shall secure incurred liabilities for the payment of compensation and the performance of the obligations of employers imposed under this chapter by renewing the prior year’s security deposit or by making a new deposit of security. If a new deposit is made, it shall be posted within 60 days of the filing of the self-insured employer’s annual report with the director, but in no event later than May 1.
(b) The solvency risk and security deposit amount for each private and group self-insurer shall be acceptable to the Self-Insurers’ Security Fund.
(c) Unless otherwise permitted by regulation, the deposit shall be an amount equal to the self-insurer’s projected losses, net of specific excess insurance coverage, if any, and inclusive of incurred but not reported (IBNR) liabilities, allocated loss adjustment expense, and unallocated loss adjustment expense, calculated as of December 31 of each year. The calculation of projected losses and expenses shall be reflected in a written actuarial report that projects ultimate liabilities of the private self-insured employer at the expected actuarial confidence level, to ensure that all claims and associated costs are recognized. The written actuarial report shall be prepared by an actuary meeting the qualifications prescribed by the director in regulation.
(d) In determining the amount of the deposit required to secure incurred liabilities for the payment of compensation and the performance of obligations of a self-insured employer imposed under this chapter, the director shall offset estimated future liabilities for the same claims covered by a self-insured plan under the federal Longshore and Harbor Workers’ Compensation Act (33 U.S.C. Sec. 901 et seq.), but in no event shall the offset exceed the estimated future liabilities for the claims under this chapter.
(e) The director may only accept as security, and the employer shall deposit as security, cash, securities, surety bonds, or irrevocable letters of credit in any combination the director, in his or her discretion, deems adequate security. The current deposit shall include any amounts covered by terminated surety bonds or excess insurance policies, as shall be set forth in regulations adopted by the director pursuant to Section 3702.10.
(f) Surety bonds, irrevocable letters of credit, and documents showing issuance of any irrevocable letter of credit shall be deposited with, and be in a form approved by, the director, shall be exonerated only according to its terms and, in no event, by the posting of additional security.
(g) The director may accept as security a joint security deposit that secures an employer’s obligation under this chapter and that also secures that employer’s obligations under the federal Longshore and Harbor Workers’ Compensation Act.
(h) The liability of the Self-Insurers’ Security Fund, with respect to any claims brought under both this chapter and under the federal Longshore and Harbor Workers’ Compensation Act, to pay for shortfalls in a security deposit shall be limited to the amount of claim liability owing the employee under this chapter offset by the amount of any claim liability owing under the federal Longshore and Harbor Workers’ Compensation Act, but in no event shall the liability of the fund exceed the claim liability under this chapter. The employee shall be entitled to pursue recovery under either or both the state and federal programs.
(i) Securities shall be deposited on behalf of the director by the self-insured employer with the Treasurer. Securities shall be accepted by the Treasurer for deposit and shall be withdrawn only upon written order of the director.
(j) Cash shall be deposited in a financial institution approved by the director, and in the account assigned to the director. Cash shall be withdrawn only upon written order of the director.
(k) Upon the sending by the director of a request to renew, request to post, or request to increase or decrease a security deposit, a perfected security interest is created in the private self-insured’s assets in favor of the director and the Self-Insurers’ Security Fund to the extent of any then unsecured portion of the self-insured’s incurred liabilities. That perfected security interest is transferred to any cash or securities thereafter posted by the private self-insured with the director and is released only upon either of the following:
1. (1) The acceptance by the director of a surety bond or irrevocable letter of credit for the full amount of the incurred liabilities for the payment of compensation.
2. (2) The return of cash or securities by the director.
  The private self-insured employer loses all right, title, and interest in, and any right to control, all assets or obligations posted or left on deposit as security. The director may liquidate the deposit as provided in Section 3701.5 and apply it to the self-insured employer’s incurred liabilities either directly or through the Self-Insurers’ Security Fund.