W. Va. Code § 33-16D-9: Maintenance of records.

(a) Each small employer carrier shall maintain at its principal place of business a complete and detailed description of its rating practices and renewal underwriting practices, including information and documentation which demonstrate that its rating methods and practices are based upon commonly accepted actuarial principles.

(b) Each small employer carrier shall file each first day of March with the commissioner an actuarial certification that the carrier is in compliance with the provisions of section five of this article and that the rating methods of the carrier are actuarially sound. A copy of such certification shall be retained by the carrier at its principal place of business.

(c) A small employer carrier shall make the information and documentation described in subsection (a) of this section available to the commissioner upon request.