Wyo. Stat. § 21-19-105: Rules and regulations; further provisions as to contributions.

The governing body shall make rules and regulations necessary and appropriate for administration of the plan and for the performance of its functions under W.S. 21-19-101 through 21-19-106. Except as provided under W.S. 21-19-102(d), a retirement plan may require a minimum dollar contribution by employees whose annual salary rate is less than eight thousand six hundred dollars ($8,600.00), and may permit employees to make voluntary additional contributions to be withheld from salary payments and paid into the retirement plan for the employee's benefit. In no event shall the total employer contribution to the Wyoming retirement account and the institution's retirement plan exceed the amount that may be authorized by the Wyoming Retirement Act.