Alaska Stat. § 39.35.615
(a) A political subdivision or public organization may request that its participation agreement be amended. The request may be made only after adoption of a resolution by the legislative body of the political subdivision and approval of the resolution by the person required by law to approve the resolution, or, in the case of a public organization, after adoption of a resolution by the governing body of that public organization. A certified copy of the resolution shall be filed with the administrator. An employer may not award past service to employees added to its participation agreement. When an employer requests to amend its participation agreement to add an elected official, the plan may cover that elected official only if the employer pays compensation to the elected official, for services as an elected official, in the amount of at least $2,001 a month. If a political subdivision or public organization amends its participation agreement so as to terminate coverage of a department, group, or other classification of employees, each employee whose coverage is so terminated, regardless of the employee's employment status at the date of termination, shall be considered fully vested in actuarially adjusted accrued retirement benefits as of the date of termination, unless