W. Va. Code § 15-2-37
(c) Every employee who completes ten years of service with the agency is eligible, upon separation of employment, either to withdraw his or her contributions in accordance with subsection (a) of this section or to choose not to withdraw his or her accumulated contributions with interest. Upon attainment of age sixty-two, a member who chooses not to withdraw his or her contributions is eligible to receive a retirement annuity. Any member choosing to receive the deferred annuity under this subsection is not eligible to receive the annual annuity adjustment provided in section twenty-seven-a of this article. When the board retires any member under any of the provisions of this section, the member is entitled to receive annually and shall be paid from the fund in equal monthly installments during the lifetime of the member while in status of retirement one or the other of two amounts, whichever is greater, subject to reduction if necessary to comply with the maximum benefit provisions of Section 415 of the Internal Revenue Code and section forty-four of this article: