(1) For individual and group self-insurers, the amount of security must be determined based upon an actuarial review. The actuarial review must take into consideration the use by a group self-insurer of any irrevocable standby letter of credit. Except as provided in subparagraph (3), initial funding for each plan year must be maintained at the 90% or higher confidence level. Funding after the completion of the initial plan year may be established no lower than the 75% confidence level if the following has occurred:

For the purposes of determining the confidence level, all completed years at the same confidence level may be aggregated. For individual self-insurers, funds may not be released from the trust or transferred between years except as approved by the superintendent. The governing body of a group self-insurer may at any time declare a surplus of funds above the required confidence level, but may only release funds after the completion of any plan year. The superintendent may request information regarding any such declaration. Any distribution of surplus must be based upon an actuarial review of all outstanding obligations for all completed plan years, an audited financial statement of the group for all completed plan years and a surplus distribution worksheet for all completed plan years on a form approved by the superintendent. The group self-insurer must provide the required information within 10 days after the distribution. Any surplus declared or distributed pursuant to this paragraph is subject to adjustment after review by the superintendent within 60 days of the receipt of the required information. Any deficit below the required confidence level, as determined by the superintendent, that results from a distribution under this paragraph must be funded within 45 days from the date of the notice by the superintendent.

(2) A group self-insurer may elect to fund at a higher confidence level through the use of cash, marketable securities or reinsurance. If a member of a group self-insurer terminates membership in the group for any reason, that member shall fund the member's proportionate share of the liabilities and obligations of the trust to the 95% confidence level. If for any reason the departing member fails to fund the member's proportionate share of the trust's exposure to the 95% level of confidence, the trust is responsible for that member's liabilities and obligations to the trust. If the superintendent finds that a material risk to the trust's ability to satisfy its liabilities and obligations in full exists due to the failure of one or more departing members to fund the departing members' proportionate share of those liabilities and obligations to the 95% confidence level or due to the failure of the group trust to enforce the funding requirement, the superintendent shall consider the unfunded share of the trust's exposure when approving a determination of a surplus or deficit in the trust.

(3) Subject to prior approval by the superintendent in accordance with subparagraph (5), a self-insurer that has successfully maintained an actuarially determined fully funded trust for a period of 5 or more consecutive years may fund all years, including the prospective fund year, at the 75% or higher confidence level in the aggregate and a group self-insurer that has successfully maintained an actuarially determined fully funded trust for a period of 10 or more consecutive years may fund all years, including the prospective fund year, at the 65% or higher confidence level in the aggregate.

(4) Trust assets must consist of cash or marketable securities of a type and risk character as specified in subsection 9. The trustee shall submit a report to the superintendent not less frequently than quarterly that lists the assets comprising the corpus of the trust, including a statement of their market value and the investment activity during the period covered by the report. The trust must be established and maintained subject to the condition that trust assets may not be transferred or revert in any manner to the employer except to the extent that the superintendent finds that the value of the trust assets exceeds the present value of incurred claims and claims settlement costs with an actuarially indicated margin for future loss development. In all other respects, the trust instrument, including terms for certification, funding, designation of trustee and payout, must be as approved by the superintendent, except that the value of the trust account must be actuarially calculated at least annually by a casualty actuary who is a member of the American Academy of Actuaries and adjusted to the required level of funding.

(5) In determining whether a self-insurer that maintains an actuarially determined fully funded trust qualifies for a reduction in the required confidence level pursuant to subparagraph (1) or (3) or is subject to an enhanced confidence level pursuant to subparagraph (6), the superintendent shall consider the financial condition of the self-insurer in relation to the potential workers' compensation liabilities. The factors the superintendent may consider include the self-insurer's liquidity, leverage, tangible net worth, size and net income. For group self-insurers, the superintendent's review must be based on the aggregate financial condition of the group members. A group self-insurer that has been in existence for 5 years or more and is a member of a reinsurance account approved pursuant to subsection 4-A and that secures reinsurance with an attachment point of $1,000,000 or less and that has assets subject to joint and several liability of at least $40,000,000 is deemed to qualify for the 65% confidence level under subparagraph (3) if the group self-insurer presents an actuarial opinion that funding at the 65% confidence level is sufficient. At the request of the superintendent, a group self-insurer shall report relevant financial information, on a form prescribed by the superintendent, at such intervals as the superintendent directs. The superintendent may establish additional review criteria or procedures by rule. Rules adopted pursuant to this subparagraph are routine technical rules as defined in Title 5, chapter 375, subchapter 2-A.

(6) If the superintendent determines, based on an evaluation of a self-insurer's financial condition pursuant to subparagraph (5), that the confidence level at which the self-insurer has been authorized to fund its trust is not sufficient to provide adequate security for the self-insurer's reasonably anticipated potential workers' compensation liabilities, the superintendent shall make a determination of the appropriate confidence level and order the self-insurer to take prompt action to increase funding to that level within 60 days.