W. Va. Code § 5-10B-6

The deferred compensation plan or plans established pursuant to this article shall exist and serve in addition to other retirement, pension or benefit systems established by the state employer and any public employer. The deferred compensation plan or plans established by this article shall not supersede, make inoperative or reduce any benefits provided by the consolidated retirement system or programs established by the state employer or any public employer, or any other retirement, pension or benefit program established by law for the benefit of employees.