Neb. Rev. Stat. § 48-140: Neb. Rev. Stat. § 48-140

Any lump-sum settlement by agreement of the parties pursuant to section 48-139 shall be final and not subject to readjustment if the settlement is in conformity with the Nebraska Workers' Compensation Act, unless the settlement is procured by fraud. All awards of compensation made by the compensation court, except those amounts payable periodically, shall be final and not subject to readjustment.