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• Pursuant to Wis. Stat. 767.58(1), both parties shall notify the county child support agency under Wis.Stat. 59.53(5) in writing of any change of address within 10 business days.

• The payer shall also notify the county child support agency in writing within 10 business days of any change to employer and of any substantial change in the amount of his or her income. Wis.Stat.767.58

• Notifying the child support agency of a substantial change in the amount of  a payer's income will not automatically result in a change of the order unless a revision is sought, under Wis. Stat. 767.553.