Neb. Rev. Stat. §§ 48-108
No claim or agreement for legal services or disbursements in support of any demand made or suit brought under the Nebraska Workers' Compensation Act shall be an enforceable lien against the amounts to be paid as damages or compensation or be valid or binding in any other respect, unless the same be approved in writing by a judge of the Nebraska Workers' Compensation Court. After such approval, if notice in writing be given the defendant of such claim or agreement for legal services and disbursements, the same shall be a lien against any amount thereafter to be paid as damages or compensation. When the employee's compensation is payable by the employer in periodical installments, the compensation court shall fix, at the time of approval, the proportion of each installment to be paid on account of legal services and disbursements.
Neb. Rev. Stat. §§ 48-108