45 CFR § 32.9 - Financial hardship.
(a) A debtor whose wages are subject to a withholding order may, at any time, request a review by the Department of the amount garnished, based on materially changed circumstances such as disability, divorce, or catastrophic illness which result in financial hardship.
(b) A debtor requesting such a review under paragraph (a) of this section shall submit the basis for claiming that the current amount of garnishment results in a financial hardship to the debtor, along with supporting documentation. The Secretary shall consider any information submitted in accordance with this part.
(c) If a financial hardship is found, the Secretary shall downwardly adjust, by an amount and for a period of time established by the Secretary, the amount garnished to reflect the debtor's financial condition. The Secretary will notify the employer of any adjustments to the amount to be withheld.