W. Va. Code § 5-16-13
(2) The spouse and dependent coverage is limited to excess or secondary coverage for each spouse and dependent who has primary coverage from any other source. If an employee’s spouse has health insurance available through an employer not defined in §5-16-2 of this code, then the employer may not cover any portion of premiums for the employee’s spouse coverage, unless the employee adds his or her spouse to his or her coverage by paying the cost of the actuarial value of the plan: Provided, That this does not apply to spouses of retired employees or employers subject to §5-16-22 of this code. For purposes of this subsection, "actuarial value" means the value as recommended by healthcare actuaries under §5-16-5 of this code.
The director may require proof regarding spouse and dependent primary coverage and shall adopt rules governing the nature, discontinuance, and resumption of any employee’s coverage for his or her spouse and dependents.
(e) Conversion of accrued annual and sick leave for extended insurance coverage upon retirement for employees who elected to participate in the plan after June, 1988. — Notwithstanding subsection (d) of this section, and except as otherwise provided in subsections (g) and (l) of this section, when an employee participating in the plan who elected to participate in the plan on and after July 1, 1988, is compelled or required by law to retire before reaching the age of 65, or when the participating employee voluntarily retires as provided by law, that employee’s annual leave or sick leave, if any, shall be credited toward one half of the premium cost of the insurance provided by this article, for periods and scope of coverage determined according to the following formulae: