Wyo. Stat. § 15-5-417: Application of benefits.

(a) A service pension, disability pension, survivor's pension, death benefit or withdrawal benefit shall be paid only upon the filing of an application in a form prescribed by the board. A monthly benefit shall not be payable for any month earlier than the second month preceding the date on which the application for such benefit is filed.

(b) The board may require any member, inactive member, retired member or eligible survivor to furnish any information as may be required for the determination of benefits under this article, if the determination of the pension is dependent upon that information. The board may withhold payment of any benefit, if the determination of the benefit is dependent upon the information and the member, inactive member, retired member or eligible survivor does not cooperate in the furnishing or procuring thereof.