In today’s multicultural workplaces, it’s common to have employees whose first language isn’t English. But can employers lawfully restrict the use of other languages in the workplace? The answer lies in balancing business needs with anti-discrimination law — and understanding the context in which language is used.
Is It Legal to Ban Employees from Speaking Their Native Language?
While “language” itself isn’t a protected characteristic under the Equality Act 2010, it is closely linked to race, which includes nationality and ethnic origin. As such, restricting someone’s use of their native language may amount to race discrimination.
A blanket ban on speaking any language other than English could be seen as indirect discrimination — especially if it disproportionately affects a particular national or ethnic group.
In some cases, instructing an employee not to speak their native language might constitute direct discrimination, particularly if it’s applied inconsistently or without justification.
In the case of Indirect Discrimination, an employer would need to demonstrate that the policy or instruction was a proportionate means of achieving a legitimate aim — such as ensuring health and safety, protecting confidentiality, or promoting effective communication in a particular business context.
Key Case Law: What Have the Courts Said?
Two leading cases provide helpful guidance:
Dziedziak v Future Electronics Ltd (2012): A Polish employee was told not to speak Polish at work. The Employment Tribunal found this to be direct discrimination, as the employer failed to justify why only English should be spoken, especially when the conversations were between Polish colleagues in non-critical contexts.
Kelly v Covance Laboratories Ltd (2015): Here, an English-only rule was found to be lawful and non-discriminatory. The employee was told to speak only English due to concerns about her behaviour, combined with legitimate business needs around security and supervision.
These cases illustrate that context is everything. The same language policy could be lawful in one setting and discriminatory in another, depending on how it’s applied and why.
New Tribunal Ruling (2025): A Clearer Line on Harassment
In August 2025, a Glasgow employment tribunal brought further clarity to this area of law in the case of Samantha Kellington‑Crawford v Newlands Care Angus.
The claimant, an English-speaking senior carer, attended a supervision meeting where three Polish-speaking managers conversed in Polish for much of the session. She was unable to understand what was being said and was left feeling excluded and humiliated. The tribunal ruled that this conduct amounted to race discrimination and harassment, awarding her compensation.
What made this case particularly significant was the tribunal’s focus on how the language was used, not just the fact that a different language was spoken. The context — a formal meeting meant for supervision and support — made the exclusion especially harmful.
This decision confirms that while casual use of native languages in social or informal settings is generally acceptable, deliberate or careless exclusion of others in professional contexts can cross the line into unlawful discrimination.
Are There Legitimate Reasons to Require English at Work?
Yes, in some cases. Employers can justify an English-only policy in certain scenarios, such as:
Health and safety requirements — e.g. in environments where instructions must be clearly understood to avoid accidents.
Operational needs — e.g. customer-facing roles where communication in English is necessary.
Inclusivity and transparency — e.g. ensuring that all team members can follow conversations during meetings or group tasks.
However, any such policy must be proportionate, consistent, and clearly communicated. A total ban across the board is rarely justifiable and could alienate staff or expose the business to legal risk.
What Should Employers Do? Best Practice Tips
To navigate this issue effectively and lawfully, employers should:
Avoid blanket bans on languages — instead, identify specific situations where English is necessary (e.g. client meetings, safety briefings).
Justify any restrictions clearly, based on operational needs.
Apply policies consistently across the workforce, regardless of nationality or ethnicity.
Train managers to deal sensitively with language issues and to understand when intervention may or may not be appropriate.
Encourage inclusion — where possible, foster a workplace culture that embraces linguistic diversity, while ensuring no employee feels excluded or isolated.
Employers do have some discretion to manage how communication happens in the workplace — especially where safety, security, or clarity are at stake. But this discretion must be exercised carefully.
Discriminating against someone for speaking their native language — whether directly or indirectly — can lead to costly legal consequences, as seen in the recent Glasgow case. Equally, failing to ensure that all employees can participate equally in meetings and discussions may also breach equality laws.
Ultimately, the key is balance: ensuring business needs are met while promoting a respectful, inclusive working environment where everyone feels they belong — and can understand what’s going on.
If you feel that you have been discriminated against because of your race or using your native language at work, or if you are a business and are considering implementing a language policy, then please contact us on 0116 212 1000
