Nebraska Revised Statute 52-1901
Nonconsensual common-law lien, defined.
For purposes of sections 52-1901 to 52-1907, nonconsensual common-law lien means a document that purports to assert a lien against real or personal property of any person or entity and:
(1) Is not expressly provided for by a specific state or federal statute;
(2) Does not depend on the consent of the owner of the real or personal property affected; and
(3) Is not an equitable or constructive lien imposed by a state or federal court of competent jurisdiction.