WVC 21 - 5 - 10
§21-5-10. Provisions of law may not be waived by agreement.
Except as provided in section thirteen, no provision of this
article may in any way be contravened or set aside by private
agreement, and the acceptance by an employee of a partial payment
of wages shall not constitute a release as to the balance of his
claim and any release required as a condition of such payment
shall be null and void.