Dismissal for aggressive outburst upheld despite ADHD claim: Royal Mail case

A case about conduct, not condition

This case shows that even a dedicated employee with 21 years' service can be fairly dismissed for a single outburst if the employer's process is robust. The employee, an Operational Postal Grade, lost his temper after being asked to deliver surplus parcels, shouting and swearing at two managers. Royal Mail suspended him, investigated, held a disciplinary hearing, and conducted a full appeal rehearing. The tribunal found this process thorough and the decision to dismiss for gross misconduct reasonable.

The disability angle

The employee argued that his behaviour was caused by ADHD, which he claimed amounted to a disability. The tribunal accepted he had a mental impairment but could not confirm ADHD. More importantly, it found no evidence that the outburst was a consequence of his condition. The employee had not raised ADHD before the incident, and his behaviour was not typical of ADHD-related impulsivity. This meant the discrimination claim failed.

What the employer did right

Royal Mail followed a fair procedure: suspension, investigation, disciplinary meeting with union representation, and a full appeal. The tribunal noted that the employee was given opportunities to explain his behaviour and present evidence. The employer also made adjustments during the tribunal hearing itself, such as regular breaks and help with questioning. This thoroughness protected them from a finding of unfair dismissal.

Lessons for similar cases

For employees, this case is a reminder that a disability label does not automatically excuse misconduct. The key is whether the behaviour is a consequence of the disability. For employers, it shows that a well-documented process can withstand scrutiny even when a disability is alleged. However, employers should still consider reasonable adjustments during disciplinary proceedings if a disability is known or suspected.