http://www.legislation.gov.uk/nisi/1999/2790/article/6/made
The Employment Relations (Northern Ireland) Order 1999
Trade unions
Employment relations
Dismissal
Collective bargaining
Employment tribunals
Government Printer for Northern Ireland
2016-06-09
NORTHERN IRELAND
This Order makes provision for Northern Ireland corresponding to that made by the Employment Relations Act 1999 (other than sections 22, 27, 39 and 40).
Trade Unions
Ballots and notices6
Schedule 3 shall have effect.