NJC press releases are regularly issued to provide information on new steps in the NAECI revision, new NAECI tariff recommendations and important industry news. You can find them in our document archive. Working rules, wages, working conditions Companies in the sector are included in the national agreement, which is managed jointly between the Unite union (on behalf of operational staff) and BESA (on behalf of employers). This national agreement is at the heart of employee relations in the H&V contract sector of the sector and is mainly used by companies that deal with the construction of industrial and commercial pipelines and the installation of pipelines.