W. Va. Code § 21A-10-8

A person who, by reason of nondisclosure or misrepresentation, either by himself or another (irrespective of whether such nondisclosure or misrepresentation was known or fraudulent), has received a sum as a benefit under this chapter, shall either have such sum deducted from a future benefit payable to him or shall repay to the commissioner the amount which he has received. Collection shall be made in the same manner as collection of past-due payments against employers as set forth in section sixteen of article five of this chapter, which specifically includes the institution of civil action and collection procedures thereon enumerated in said section: Provided, That such collection or deduction of benefits shall be barred after the expiration of five years, except for known or fraudulent nondisclosure or misrepresentation which shall be barred after the expiration of ten years, from the date of the filing of the claim in connection with which such nondisclosure or misrepresentation occurred.