Respondent won Employment Tribunal · 28 September 2023

Aggressive behaviour at investigation meeting: dismissal for gross misconduct upheld

A restoration technician who left work early and then behaved aggressively during an investigation meeting was fairly dismissed for gross misconduct, the tribunal has ruled.

1 min read · Last updated 19 May 2026

Case details

Key facts

  • The claimant left work early on 13 March 2023 without permission and without checking accommodation arrangements.
  • At an informal meeting on 14 March 2023, the claimant behaved aggressively and refused to co-operate.
  • The respondent carried out an investigation via Croner and held a disciplinary hearing on 22 March 2023.
  • The claimant was summarily dismissed on 24 March 2023 for gross misconduct.
  • The claimant appealed but the appeal was dismissed on 5 April 2023.

Timeline

  1. Employment started

    The claimant began employment as a restoration technician.

  2. Left work early

    The claimant left a worksite in Cumbria at 2.15pm without permission and without checking accommodation arrangements.

  3. Informal meeting

    The claimant attended an informal meeting with finance manager Leanne Nicholls, during which he behaved aggressively and refused to co-operate.

  4. Invitation to disciplinary hearing

    The claimant was invited to a disciplinary hearing regarding allegations of insubordination and aggressive behaviour.

  5. Disciplinary hearing

    A disciplinary hearing was held via video conference; the claimant failed to provide meaningful explanations.

  6. Summary dismissal

    The claimant was summarily dismissed for gross misconduct.

  7. Appeal lodged

    The claimant appealed the dismissal.

  8. Appeal hearing

    An appeal hearing was held via video conference.

  9. Appeal dismissed

    The claimant's appeal was dismissed.

  10. Claim presented

    The claimant presented a claim of unfair dismissal to the tribunal.

The outcome

The tribunal dismissed the claim of unfair dismissal, finding that the employer acted fairly throughout.

  • The employer had a genuine belief that the claimant had behaved aggressively and refused to co-operate during an investigation meeting.
  • The investigation and disciplinary process were reasonable in the circumstances, including seeking external HR advice from Croner.
  • The decision to dismiss was within the range of reasonable responses for a reasonable employer.

No compensation was awarded as the claim failed.

Lessons & takeaways

  • Employers can rely on external HR advice to support a fair process, as long as the investigation and hearing are reasonable overall.
  • Aggressive or uncooperative behaviour during an investigation can itself amount to gross misconduct, even if the original issue is minor.
  • Employees should engage constructively with investigation meetings; refusing to cooperate can worsen their position.
  • A clean disciplinary record does not prevent dismissal if the misconduct is serious enough.

When an investigation meeting becomes the problem

This case shows how an employee's reaction to being questioned can sometimes become the main issue. The claimant, a restoration technician with five years' service and a clean record, left a worksite early without permission. When his employer called him in to discuss it, the meeting escalated. The tribunal accepted the employer's evidence that the claimant behaved aggressively and refused to cooperate, which led to summary dismissal for gross misconduct.

What the employer did right

The employer, Restoration Force Limited, took several steps that helped its case. It arranged an informal meeting to discuss the early departure, then when that went badly, it commissioned a formal investigation via external HR consultants Croner. A disciplinary hearing was held by video, and the claimant was given the opportunity to explain himself. The tribunal noted that the claimant failed to provide meaningful explanations during the hearing. An appeal was also conducted, which upheld the dismissal.

Why the claim failed

The tribunal applied the standard test for conduct dismissals. It found that the employer genuinely believed the claimant had committed gross misconduct, had reasonable grounds for that belief (based on witness accounts), and had carried out a reasonable investigation. The decision to dismiss was within the range of responses that a reasonable employer might take. The claimant's denial of aggressive behaviour was not enough to undermine the employer's reasonable conclusions.

What this means for similar claims

For employees, this case is a reminder that how you behave during an investigation can be just as important as the original incident. Refusing to cooperate or acting aggressively can be treated as separate misconduct. For employers, it shows that a structured process—even one involving external HR advice—can withstand scrutiny, provided the decision is reasonable and the employee is given a fair hearing.

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