W. Va. Code § 15-2A-6a
Notwithstanding any other provision of this article or state law, the board shall administer the retirement system in compliance with the limitations of Section 415 of the Internal Revenue Code and Treasury regulations under that section to the extent applicable to governmental plans so that no annuity or other benefit provided under this system shall exceed those limitations. The extent to which any annuity or other benefit payable under this retirement system shall be reduced as compared with the extent to which an annuity, contributions or other benefits under any other defined benefit plans or defined contribution plans required to be taken into consideration under Section 415 of the Internal Revenue Code shall be determined by the board in a manner that shall maximize the aggregate benefits payable to the member. If the reduction is under this retirement system, the board shall advise affected members or retirants of any additional limitation on the annuities required by this section.
W. Va. Code § 15-2A-6a