[Leadership] Airport workers under the aegis of the National Union of Transport Employees (NUATE), Air Transport Services Senior Staff Association of Nigeria (ATSSSAN), Association of Nigeria Aviation Professionals (ANAP) and the Amalgamated Union of Public Corporation, Civil Service Technical and Recreational services Employees (AUPCTRE) have threatened to shut down activities at the airports over failure to release negotiated conditions of service of the agencies since 2013.