W. Va. Code § 48-1-233

"Marital property" means:

(1) All property and earnings acquired by either spouse during a marriage, including every valuable right and interest, corporeal or incorporeal, tangible or intangible, real or personal, regardless of the form of ownership, whether legal or beneficial, whether individually held, held in trust by a third party, or whether held by the parties to the marriage in some form of coownership such as joint tenancy or tenancy in common, joint tenancy with the right of survivorship, or any other form of shared ownership recognized in other jurisdictions without this state, except that marital property does not include separate property as defined in section 1-238; and

(2) The amount of any increase in value in the separate property of either of the parties to a marriage, which increase results from: (A) An expenditure of funds which are marital property, including an expenditure of such funds which reduces indebtedness against separate property, extinguishes liens, or otherwise increases the net value of separate property; or (B) work performed by either or both of the parties during the marriage.

The definition of "marital property" contained in this section has no application outside of the provisions of this article, and the common law as to the ownership of the respective property and earnings of a husband and wife, as altered by the provisions of article 29 of this chapter and other provisions of this code, are not abrogated by implication or otherwise, except as expressly provided for by the provisions of this article as such provisions are applied in actions brought under this article or for the enforcement of rights under this article.