Respondent won Employment Tribunal · 31 August 2023

Porter dismissed for pushing security guard: zero-tolerance policy upheld

A hospital porter with nine years' service was fairly dismissed for pushing a security guard who challenged him for not wearing a face mask. The tribunal upheld the employer's decision, finding the dismissal within the range of reasonable responses.

1 min read · Last updated 18 May 2026

Case details

Key facts

  • The claimant was employed as a porter from 7 May 2013 to 10 December 2021.
  • On 29 September 2021, the claimant entered a hospital without a face mask and was challenged by a security guard.
  • The security guard reported that the claimant pushed him out of an elevator.
  • The respondent investigated, held a disciplinary hearing, and summarily dismissed the claimant for gross misconduct.
  • The claimant appealed twice, but the dismissal was upheld.
  • The tribunal found the dismissal fair and within the range of reasonable responses.

Timeline

  1. Employment start

    Claimant began working as a porter for Mitie Ltd at University College London Hospital.

  2. Incident with security guard

    Claimant entered hospital without a face mask; security guard challenged him and reported being pushed out of an elevator.

  3. Investigation meeting

    David Johnson held an investigation meeting with the claimant, who denied pushing the guard.

  4. Investigation conclusion

    David Johnson concluded there was sufficient evidence of gross misconduct after reviewing CCTV.

  5. Disciplinary hearing

    Terence Gilliland chaired the hearing; claimant maintained he did not push the guard.

  6. Summary dismissal

    Claimant was summarily dismissed for gross misconduct.

  7. First appeal lodged

    Claimant appealed the dismissal, arguing CCTV did not show assault and citing his clean record.

  8. Appeal hearing

    Peter Johnson heard the appeal; claimant apologised and asked for leniency.

  9. Appeal dismissed

    Peter Johnson upheld the dismissal, finding apology insufficient given the misconduct.

  10. Full merits hearing

    Three-day hearing before Employment Judge Burge; claimant and respondent witnesses gave evidence.

  11. Judgment

    Tribunal dismissed the unfair dismissal and wrongful dismissal claims.

The outcome

The tribunal dismissed the porter's claims for unfair dismissal and wrongful dismissal.

The key reason was that the employer had a genuine belief, based on a reasonable investigation and CCTV evidence, that the porter had pushed the security guard. The employer's zero-tolerance policy on physical assault made dismissal a reasonable response, even for a long-serving employee with a clean record.

No compensation was awarded as the claims failed.

Lessons & takeaways

  • Employers with a clear zero-tolerance policy on physical assault can justify dismissal even for a first offence, provided they carry out a reasonable investigation.
  • CCTV footage can be decisive in conduct dismissals; employees should be aware that their actions may be recorded and used as evidence.
  • A clean disciplinary record and long service do not automatically protect an employee from dismissal for gross misconduct if the employer's policy is consistently applied.
  • Apologising after dismissal is unlikely to overturn a decision if the employer reasonably believes the misconduct occurred.

This case shows how a single moment of physical contact can end a long career, even when the employee has an otherwise clean record. The porter, who had worked at the hospital for over nine years, was dismissed after a security guard reported being pushed out of an elevator. The employer's investigation included reviewing CCTV footage, which supported the guard's account.

What the employer did right

Mitie Limited followed a thorough process: suspension, investigation, disciplinary hearing, and two appeals. The investigating officer viewed the CCTV and concluded there was sufficient evidence of gross misconduct. The disciplinary chair considered the porter's denial and clean record but decided that pushing a security guard violated the company's zero-tolerance policy on physical assault. The tribunal noted that the employer's belief was reasonable based on the evidence available.

What the porter could have done differently

The porter maintained he did not push the guard, but the CCTV footage contradicted his account. While he apologised at the appeal, the tribunal found that the employer was entitled to treat the misconduct as serious enough to warrant dismissal. A timely admission might have led to a different outcome, but the employer's policy left little room for leniency.

Why this matters

This case reinforces that tribunals will not substitute their own judgment for that of the employer, as long as the employer's decision falls within the 'range of reasonable responses'. Even long-serving employees can be fairly dismissed for gross misconduct if the employer has a clear policy and follows a fair procedure. The porter's claims for unfair dismissal and wrongful dismissal were both dismissed, and he received no compensation.

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