Wyo. Stat. § 9-3-709
Any employee covered by this act who terminates his employment is entitled to a refund of his member account plus interest thereon, except that commencing July 1, 2019 for an employee who has fewer than four (4) years of service to his credit, no interest shall accrue to the member account during any period in which the employee is not employed by a participating employer. The refunds shall be made only upon written request to the board. Any employee who withdraws from the system under this section shall forfeit all rights to further benefits, employer matching contributions and service credit under the system. Any person who later returns to service covered by this act may redeposit the amount of the contributions withdrawn, in lump sum, together with interest, if any, and upon earning not less than two (2) years credited service, may reestablish his service credits as of the time of withdrawal of his contributions. Any redeposit payment pursuant to this section shall be made not later than ten (10) years following the date of reemployment or prior to retirement, whichever first occurs.
W.S. 9-3-709