On 27 June 2025, the Equality Commission for Northern Ireland (ECNI) published a Press Release important legal paper in response to the UK Supreme Court’s ruling in For Women Scotland, which confirmed that the term “sex” under the Equality Act 2010 refers to biological sex.

While the Equality Act 2010 does not apply in Northern Ireland, the Sex Discrimination (Northern Ireland) Order 1976 governs equality law here. However, Northern Ireland’s legal landscape is uniquely shaped by Article 2 of the Windsor Framework, which ensures no diminution of equality rights and requires legislation to be interpreted in line with European law. Notably, the UK Supreme Court’s judgment in For Women Scotland did not assess the implications of Article 2.

Key Points for Employers

The ECNI has acknowledged that the Supreme Court’s interpretation of “sex” could be highly persuasive in Northern Ireland’s courts and tribunals, even though it is not legally binding here. That said, the Commission identifies a number of unresolved legal questions and has committed to a cautious and transparent approach by seeking legal clarity before issuing final guidance.

ECNI’s Six-Step Roadmap

To help employers, service providers, and public bodies navigate this complex legal terrain, the ECNI has outlined 6 steps in what it describes as its Road Map. These steps are:

1. Publication of the Legal Paper The 66-page document titled “The meanings of ‘sex’, ‘men’, ‘women’ and ‘gender reassignment’ in equality and allied legislation in Northern Ireland” lays out key uncertainties and interim considerations. It includes interim guidance for employers, particularly regarding the provision of separate sex facilities (see Annex 2).
2. 12-Week Public Consultation Running from 27 June to 19 September 2025, this consultation gives stakeholders a chance to engage and respond to questions raised in the paper (see Section D, paragraph 3).
3. Pre-Action Protocol Engagement The ECNI will engage with relevant organisations and individuals and send organisations and persons with a direct interest in this a formal pre-action protocol to test legal positions before moving toward litigation (see Annex 5).
4. High Court Application Subject to responses received in Step 2 and 3 above, the ECNI plans to seek a declaratory judgment from the High Court to clarify the legal approach on key issues. This step aims to establish foundational principles to inform future guidance and they are cognisant that the Courts will not provide an answer to every legal question.
5. Draft Guidance Once legal clarity is achieved, the ECNI will publish draft guidance for further stakeholder consultation.
6. Final Guidance Following feedback, finalised guidance will be issued for employers, service providers, and public authorities.

What Employers Should Do Now

While awaiting final guidance, employers are encouraged to refer to the interim guidance set out in the ECNI’s paper, especially when reviewing policies on single-sex services, facilities, or employment decisions. We will be studying that Guidance and issuing a further update to Members.