Iowa Code Title VI. Human Services [Chs. 216-255A] § 252D.8. Persons subject to immediate income withholding

a. One of the parties demonstrates and the court or child support services finds there is good cause not to require immediate withholding. A finding of good cause shall be based on, at a minimum, written findings and conclusions by the court or administrative authority as to why implementing immediate withholding would not be in the best interests of the child. In cases involving modifications, the findings shall also include proof of timely payment of previously ordered support.

b. A written agreement is reached between both parties which provides for an alternative arrangement. If the support payments have been assigned to the department pursuant to chapter 234 or 239B, or a comparable statute of another jurisdiction, the department shall be considered a party to the support order, and a written agreement pursuant to this section to waive immediate withholding is void unless approved by child support services. Any agreement existing at the time an assignment of support is made pursuant to chapter 234 or 239B or pursuant to a comparable statute of another jurisdiction shall not prevent child support services from implementing immediate withholding.

a. The date the obligor requests that the withholding begin.

b. The date the custodial parent or party to the proceeding requests that the withholding begin, if the request is approved by the district court or, in cases in which services are being provided pursuant to chapter 252B, if child support services approves the request.