Section 386.315 - Commission shall not change terms of employment subject to collective bargaining or certain accounting standards - use of accounting standard by utility, requirements - tariff filing allowed, conditions - examination of tariffs, review period1. In establishing public utility rates, the commission shall not reduce or otherwise change any wage rate, benefit, working condition, or other term or condition of employment that is the subject of a collective bargaining agreement between the public utility and a labor organization. Additionally, the commission shall not disallow or refuse to recognize the actual level of expenses the utility is required by Financial Accounting Standard 106 to record for postretirement employee benefits for all the utility's employees, including retirees, if the assumptions and estimates used by a public utility in determining the Financial Accounting Standard 106 expenses have been reviewed and approved by the commission, and such review and approval shall be based on sound actuarial principles.2. A public utility which uses Financial Accounting Standard 106 shall be required to use an independent external funding mechanism that restricts disbursements only for qualified retiree benefits. In no event shall any funds remaining in such funding mechanism revert to the utility after all qualified benefits have been paid; rather, the funding mechanism shall include terms which require all funds to be used for employee or retiree benefits. This section shall not in any manner be construed to limit the authority of the commission to set rates for any service rendered or to be rendered that are just and reasonable pursuant to sections 392.240, 393.140 and 393.150.3. Any public utility which was the subject of a rate proceeding resulting in the issuance of a report and order subsequent to January 1, 1993, and prior to August 28, 1994, directing or permitting the establishment of new rates by such utility, may file one set of tariffs modifying its rates to reflect the revenue requirement associated with the utility's expenses for postretirement employee benefits other than pensions, as determined by Financial Accounting Standard 106, including the utility's transition benefit obligation, regardless of whether the deferral or immediate expense recognition method was used, if such utility is funding the full extent of its Financial Accounting Standard 106 obligation at the time such tariffs are filed. The tariffs shall reflect the annual level of expenses as determined in accordance with Financial Accounting Standard 106. The commission may suspend such tariffs for no longer than one hundred fifty days to examine the assumptions and estimates used and to review and approve the expenses required by Financial Accounting Standard 106, including an amortization of the transition benefit obligation over no greater amortization period than twenty years based upon sound actuarial principles, and to address any rate design issues associated with the utility's Financial Accounting Standard 106-based revenue requirement. The commission shall not examine any other revenue requirement issues.L. 1993 S.B. 289, A.L. 1994 H.B. 1405