Versions of Nebraska Statutes 77-6927. Base-year employment levels; review and certification; effect on LawServer 2023 Nebraska Statutes 77-6927. Base-year employment levels; review and certification; effect 2022 Nebraska Statutes 77-6927. Base-year employment levels; review and certification; effect 2021 Nebraska Statutes 77-6927. Base-year employment levels; review and certification; effect