Oregon Revised Statutes Procedure in Civil Proceedings § 25.399

(a) That withholding has commenced;

(b) The amount to be withheld and the amount of arrears, if any;

(c) That the order to withhold applies to any current or subsequent withholder or period of employment;

(d) The procedures available for contesting the withholding and that the only basis for contesting the withholding is a mistake of fact, which means an error in the amount of current support or arrearages, or an error in the identity of the obligor;

(e) The availability of and requirements for exceptions to withholding;

(f) That the obligor has 30 days from the date that the income is first withheld pursuant to the order to withhold to contest the withholding; and

(g) The actions that will be taken if the obligor contests the withholding.