The Equality and Human Rights Commission (EHRC) has issued updated guidance following the UK Supreme Court’s landmark judgment in For Women Scotland Ltd v Scottish Ministers (April 16, 2025). That decision confirmed that, for the purposes of the Equality Act 2010, “sex” refers to biological sex, not acquired gender, even where an individual holds a Gender Recognition Certificate (GRC). [equalityhu…rights.com]
While the EHRC emphasises that it is not changing the law but clarifying how to apply it, the combination of the ruling and updated guidance represents a significant moment for employers. Organisations now need to carefully navigate competing rights and practical workplace realities.
Let’s explore the key implications.
A Legal Reset: Clarity on “Sex” — But Not Simplicity
The Supreme Court judgment provides clarity on one issue: the meaning of “sex” in the Equality Act. However, this clarity introduces complexity in application.
Under the ruling:
- “Woman” and “man” are defined by biological sex. [dwfgroup.com]
- Legal gender recognition does not change sex for Equality Act purposes. [equalityhu…rights.com]
- Trans individuals remain protected under the characteristic of gender reassignment. [gov.uk]
Implication for employers:
This is not a simplification of equality law. Instead, employers must simultaneously:
- comply with sex-based rights (e.g. single-sex provisions), and
- uphold protections against discrimination for trans employees.
Balancing these duties is now more explicit—and more challenging.
Workplace Facilities: The Most Immediate Operational Impact
The most practical and contentious area is workplace facilities.
EHRC guidance indicates:
- Employers must provide sufficient single-sex toilets and changing facilities where required. [knowledge….apiper.com]
- Access to these facilities should generally be based on biological sex, not gender identity. [hardingevans.com]
- However, trans people must not be left without any facilities. [knowledge….apiper.com]
The EHRC suggests that:
- Gender-neutral or mixed-sex facilities should be offered where possible. [hardingevans.com]
Implication for employers:
Many workplaces are not currently configured to meet this model. Employers may need to:
- assess existing facilities,
- consider redesign or additional provision, and
- plan for potentially significant cost and logistical challenges.
Policy Review: Inclusion Policies May Need Rewriting
Many organisations have introduced policies allowing staff to use facilities aligned with their gender identity. Following the ruling and guidance, such policies may now be legally problematic.
The EHRC guidance suggests that policies must reflect:
- the biological definition of sex in law, and
- the conditions under which single-sex provisions are lawful.
Implication for employers:
HR teams should urgently review:
- equality, diversity and inclusion (EDI) policies,
- dignity at work and anti-harassment policies,
- guidance for managers handling sensitive situations.
However, revising policies is not a straightforward compliance exercise, it involves navigating legal risk, employee relations, and organisational values.
Heightened Risk of Workplace Disputes
One of the most difficult implications is the increased risk of competing claims.
Employers could face:
- sex discrimination claims (e.g. from women denied single-sex spaces), or
- gender reassignment discrimination or harassment claims (e.g. from trans employees disadvantaged by policies). [brownejacobson.com]
As some commentators note, employers may feel caught in a “no-win” scenario where any approach carries legal risk.
Implication for employers:
Decision-making must be:
- evidence-based,
- proportionate, and
- clearly documented.
Seeking specialist legal advice is increasingly important.
The Importance of a “Proportionate” Approach
EHRC guidance highlights that restricting access to single-sex spaces can be lawful only if it is a proportionate means of achieving a legitimate aim, such as safety or privacy. [birketts.co.uk]
Implication for employers:
Blanket rules are unlikely to be appropriate. Instead, employers should:
- assess risks in specific contexts,
- justify decisions carefully, and
- be able to demonstrate why particular measures are necessary.
This shifts the focus from policy statements to defensible reasoning.
Cultural and Employee Relations Challenges
Beyond legal compliance, organisations face a cultural challenge.
The issue is highly sensitive and polarised. Employees may hold:
- strongly held beliefs about sex-based rights, or
- equally strong views about trans inclusion and identity.
Implication for employers:
Leaders must:
- communicate changes carefully and transparently,
- support respectful dialogue,
- train managers to handle conflict and complaints.
Failure to manage this well risks:
- reputational damage, and
- deterioration in workplace trust and inclusion.
A Moving Target: More Guidance Still to Come
The 2026 EHRC Code of Practice (currently progressing through Parliament at the time of writing) is expected to carry statutory weight once in force. [equalityhu…rights.com]
However:
- The Employment Code has not yet been fully updated.
- Further clarification may emerge.
- Case law will continue to develop.
Implication for employers:
This is not a “one-off” compliance update. Employers should:
- monitor developments closely,
- remain flexible,
- expect further adjustments to policy and practice.
Final Thoughts
The EHRC’s updated guidance, following the Supreme Court’s ruling, provides greater legal clarity, but at the cost of increased practical complexity.
For employers, the key challenge is not simply understanding the law, but operationalising it fairly and consistently in real workplaces.
Those that succeed will be organisations that:
- take a structured, legally informed approach,
- engage openly with employees, and
- avoid simplistic or reactive policy decisions.
In short, this is a moment that demands careful judgement, not quick fixes.
JD
The Equality Blog 