Neb. Rev. Stat. § 77-27,160

It is the intent of the Legislature to establish and maintain a procedure to set off against a debtor's income tax refund or state lottery prize any debt which is assigned to the Department of Health and Human Services or which any individual not eligible as a public assistance recipient is attempting to collect, which has accrued through written contract, subrogation, or court judgment and is in the form of a liquidated amount due and owing for the care, support, or maintenance of a child or for spousal support.