20 CFR 703.309: Increase or reduction in the amount of indemnity bond, letters of credit or negotiable securities.

(a) Whenever the Office considers the principal sum of the indemnity bond or letters of credit filed or the amount of the negotiable securities deposited by a self-insurer insufficient to fully secure the self-insurer's LHWCA obligations, the self-insurer must, upon demand by the Office, deposit additional security in accordance with the regulations in this part in an amount fixed by the Branch. The Branch will issue its decision requiring additional security in accordance with § 703.303, and the procedures set forth at §§ 703.303(d) and 703.304 for requesting a hearing and complying with the Office's decision will apply as appropriate.

(b) The Office may reduce the required security at any time on its own initiative, or upon application of a self-insurer, when in the Office's opinion the facts warrant a reduction. A self-insurer seeking a reduction must furnish any information the Office requests regarding its current affairs, the nature and hazard of the work of its employees, the amount of its payroll for employees engaged in maritime employment within the purview of the Act, its financial condition, its accident experience, a record of compensation payments it has made, and any other evidence the Branch considers necessary.