# The Industrial Relations (Northern Ireland) Order 1992, Paragraph 1


(1) Subject to paragraph 5, the annual return of a trade union or an employers' association required by Article 11(2) shall be sent to the Certification Officer before 1st June and shall relate to the last preceding calendar year.
(2) The annual return shall be in such form and be signed by such persons as the Certification Officer may require.

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Source: https://www.legislation.gov.uk/nisi/1992/807/schedule/1/paragraph/1 (the official version)
Page: https://openlegislation.uk/industrial-relations-northern-ireland-order-1992/schedule-1/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.