Wyo. Stat. § 9-3-304

(a) Every employee of the state and political subdivision thereof, whose services are covered by an agreement entered into under W.S. 9-3-303, shall be required to pay, for the period of coverage, into the account established by W.S. 9-3-305, contributions, with respect to wages equal to the amount of tax which would be imposed by section 1400 of the Federal Insurance Contributions Act if the services constituted employment within the meaning of that act. The liabilities shall arise in consideration of the employee's retention in the service of the state or political subdivision thereof, or his entry upon such service after the enactment of this act.

(b) The contribution imposed by this section shall be collected through the office of the state treasurer by deducting the amount of the contribution from wages as and when paid. The deductions shall be made by the finance officer of the state, or political subdivision thereof, but failure to make the deduction shall not relieve the employee or the political subdivision as the employer of liability for the contribution.

(c) If more or less than the correct amount of the contribution imposed by this section is paid or deducted with respect to any remuneration, proper adjustments, or refund if adjustment is impracticable, shall be made, without interest, in the manner and at the times as prescribed by the secretary of the treasury and state treasurer.

(d) Each political subdivision shall pay contributions into the account with respect to wages at the times the state agency by regulation prescribes, in the amounts and at the rates specified in the applicable agreement entered into by the state agency under W.S. 9-3-303.

(e) Payments due from political subdivisions under subsections (b) and (d) of this section, which are delinquent may be recovered by the state with interest at the rate of six percent (6%) per annum in an action brought for that purpose in a court of competent jurisdiction against the political subdivision liable therefor.