Whistleblowing dismissal claim fails where performance was the real reason
A high value packer who raised concerns about a colleague's mental health was dismissed for performance issues. The tribunal found the protected disclosure was not the principal reason for dismissal, and the claim was dismissed.
1 min read · Last updated 18 May 2026
Case details
- #protected-disclosure
- #mental-health
- #performance-issues
- #mobile-phone-policy
- #packing-errors
- #lateness
Key facts
- The claimant was employed as a high value packer from 11 February 2020 to 29 July 2021.
- On 23 April 2021, the claimant sent an email raising concerns about how a colleague's mental health was handled.
- The tribunal found the email was a protected disclosure.
- The claimant had performance issues including lateness and two packing errors in May 2021.
- The claimant was dismissed on 29 July 2021 for performance reasons.
- The tribunal found the protected disclosure was not the principal reason for dismissal.
Timeline
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Employment started
Claimant began working as a high value packer for the respondent.
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Signed mobile phone policy
Claimant signed the respondent's mobile phone policy restricting personal use during work.
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Positive appraisal
Claimant had a positive appraisal with Mr Canning.
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Meeting about Eram Idress
A meeting took place between Eram Idress and Mrs De Leonardis regarding mental health concerns.
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Eram Idress resigned
Eram Idress resigned via email, complaining about her treatment.
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Claimant sent email to Mr Smiley
Claimant emailed Mr Smiley raising concerns about how Eram Idress's mental health was handled.
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First packing error
Claimant sent nine silver eagle coins instead of ten to a customer.
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Second packing error
Claimant sent wrong bars to a customer.
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Verbal warning
Mr Canning and Peter Walden discussed the errors and mobile phone use with claimant; warned of disciplinary action.
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Dismissal
Claimant was dismissed by Mr Canning for performance, skill set, and attitude.
The legal issue
The tribunal had to decide whether the claimant's dismissal was automatically unfair because the principal reason was her making a protected disclosure (whistleblowing) about how a colleague's mental health was handled.
The outcome
The tribunal dismissed the claimant's claim of automatic unfair dismissal under section 103A Employment Rights Act 1996.
The tribunal accepted that the claimant's email of 23 April 2021 was a protected disclosure. However, it found that the principal reason for dismissal was her performance, including lateness and two packing errors in May 2021, and not the disclosure. The respondent had given a verbal warning in June 2021 and dismissed her on 29 July 2021 for performance, skill set, and attitude.
No compensation was awarded as the claim failed.
Lessons & takeaways
- A protected disclosure does not automatically make a dismissal unfair – the disclosure must be the principal reason for the dismissal.
- Employers should document performance issues clearly and follow a fair process to demonstrate the real reason for dismissal.
- Employees raising concerns should be aware that if they have separate performance issues, the employer may still dismiss for those reasons.
- Tribunals will look at the timeline and evidence to determine the true reason for dismissal, not just the employee's belief.
This case shows that even when an employee makes a protected disclosure – a whistleblowing complaint – they can still be fairly dismissed if the employer's real reason is unrelated performance issues. The claimant, a high value packer with 1 year and 5 months' service, sent an email in April 2021 raising concerns about how a colleague's mental health was handled. The tribunal accepted this was a protected disclosure. However, the employer, Jewellery Quarter Bullion Limited, had already noted performance concerns: the claimant was late on several occasions and made two packing errors in May 2021, sending incorrect items to customers. After a verbal warning in June, she was dismissed in July for performance, skill set, and attitude.
What the tribunal decided
The tribunal had to decide whether the protected disclosure was the principal reason for dismissal. It found that it was not. The employer's evidence showed a clear focus on performance issues, and the tribunal accepted that the dismissal was for those reasons. The claimant, representing herself, could not prove that the disclosure motivated the decision. The claim was dismissed.
What could have been done differently
The employer followed a reasonable process: it gave a verbal warning and documented the performance issues. The claimant might have strengthened her case by showing a direct link between the disclosure and the dismissal, such as evidence of hostility or a sudden change in treatment after the email. Without that, the tribunal accepted the employer's account.
Why this matters
This case is a reminder that whistleblowing protection is not a shield against dismissal for other valid reasons. Employees should keep records of any performance discussions and any negative reactions to their disclosures. Employers should ensure they have clear, documented performance concerns before dismissing, and avoid any suggestion that the disclosure played a part in the decision.
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