Wyo. Stat. § 20-6-205: When income withholding order becomes effective.

(a) Except as otherwise provided by W.S. 20-6-204(a), an income withholding order which did not become effective immediately upon entry, becomes effective upon the earliest of the following:

(i) Repealed By Laws 2000, Ch. 2, § 2.

(ii) The date the obligor requests withholding commence; or

(iii) The date the obligor becomes delinquent in payment of an amount equal to one (1) month's support obligation under the support order.