W. Va. Code § 5-10B-12a
For purposes of this article, any person or entity with information pertaining to an employee participating in the state plan shall disclose to the Treasurer any payroll related information the Treasurer determines he or she needs for the operation of the state deferred compensation plan. Disclosure of the information shall begin upon enactment of this section on a schedule and under arrangements required by the Treasurer. Information disclosed pursuant to this section shall be used by the Treasurer only for the operation of the state plan. The Treasurer shall treat the information obtained as confidential and shall not disclose the information except to a vendor providing goods or services for the plan, who shall also treat the information as confidential, or as required by law.
W. Va. Code § 5-10B-12a