Dismissed for attending union conference while on sick leave: a procedurally unfair conduct decision
An administrative officer was unfairly dismissed after attending a trade union conference while on sick leave and sending an email about a colleague. The tribunal found the process flawed and ordered re-engagement with a 30% reduction for contributory fault.
1 min read · Last updated 18 May 2026
Case details
- #trade-union-conference
- #sick-leave-policy
- #email-misconduct
- #re-engagement
- #contributory-fault
Key facts
- The claimant attended a trade union conference while on sick leave without requesting annual leave.
- The claimant sent an email containing unsubstantiated allegations about a colleague to a distribution list that included non-union members.
- The respondent dismissed the claimant for gross misconduct based on both allegations.
- The tribunal found the dismissal was procedurally unfair and outside the band of reasonable responses.
- The claimant was re-engaged with a 30% reduction for contributory fault.
Timeline
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Grievance raised
The claimant submitted a grievance against Mr Cornfield alleging harassment, discrimination and bullying.
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Grievance withdrawn
The claimant reluctantly withdrew his grievance against Mr Cornfield.
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Sick leave started
The claimant commenced a period of sick leave.
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Trade union conference
The claimant attended a PCS trade union conference from 22 to 25 May 2017 while on sick leave without prior permission.
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Email sent
The claimant sent an email about Mr Cornfield to a distribution list that included non-union members by mistake.
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Investigation letter
The claimant was informed he was being investigated for two allegations: conference attendance and the email.
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Investigation report
The investigating officer concluded the claimant had a case to answer on both allegations.
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Dismissal
The claimant was dismissed without notice for gross misconduct.
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Appeal hearing
An appeal hearing was held; the appeal was dismissed.
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Remedy hearing
The tribunal ordered re-engagement with a 30% contributory fault deduction.
The legal issue
The tribunal had to decide whether the claimant's dismissal for attending a trade union conference while on sick leave and sending an email about a colleague was fair, and whether the dismissal was automatically unfair due to trade union activities or victimisation.
The outcome
The tribunal found the claimant was unfairly dismissed under Part X of the Employment Rights Act 1996. The dismissal was procedurally unfair and outside the band of reasonable responses. However, the claims of automatic unfair dismissal due to trade union activities and victimisation were dismissed.
- The tribunal ordered re-engagement with no financial compensation.
- A 30% reduction was applied for contributory fault, meaning the claimant's conduct contributed to the dismissal.
Lessons & takeaways
- Employers must follow a fair procedure and consider all relevant evidence, including the employee's explanations, before dismissing for misconduct.
- Attending a trade union conference while on sick leave without permission can be a disciplinary matter, but the context of union duties must be considered.
- Sending emails that contain unsubstantiated allegations about colleagues can lead to dismissal, but the employer must assess proportionality and the employee's intentions.
- A finding of unfair dismissal does not automatically mean the employee was blameless; contributory fault can reduce any remedy.
- Re-engagement is a possible remedy if the employment relationship can be restored, but it is rare and depends on the circumstances.
What this case shows
This case highlights the importance of procedural fairness in conduct dismissals, especially when the employee's actions are linked to trade union activities. The claimant, an administrative officer, was dismissed for attending a trade union conference while on sick leave and for sending an email containing unsubstantiated allegations about a colleague to a wider distribution list. The tribunal found that while the employer had genuine concerns, the investigation and decision-making process were flawed. The decision maker failed to properly consider the claimant's explanation that he had attended the conference as part of his union duties and that the email was sent by mistake.
What the employer could have done differently
The Department for Work and Pensions could have avoided the unfair dismissal finding by conducting a more thorough investigation. This should have included exploring the context of the claimant's union role, his reasons for attending the conference, and whether the email was a genuine error. A fair process would also have considered whether lesser sanctions, such as a final written warning, were more appropriate given the claimant's long service and clean disciplinary record.
Why this matters
This case serves as a reminder that even when an employee's conduct appears serious, employers must follow a fair procedure and consider all mitigating factors. The tribunal's decision to order re-engagement, albeit with a 30% reduction for contributory fault, shows that a flawed process can lead to the employee being reinstated. For employees, it underscores the importance of documenting their reasons and seeking advice before taking actions that could be seen as misconduct, especially when union duties are involved.
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