Night porter with type 2 diabetes found disabled from date of diagnosis
A tribunal ruled that a night porter with type 2 diabetes was disabled from the date of his diagnosis, but rejected his claim that sleepiness was a substantial adverse effect. The case will now proceed to a final hearing on his discrimination and dismissal claims.
1 min read · Last updated 18 May 2026
Case details
- #type-2-diabetes
- #night-porter
- #sleepiness
- #urinary-incontinence
- #blurred-vision
- #occupational-health
- #preliminary-hearing
Key facts
- The claimant was employed as a Night Porter from 1 October 2006 until dismissal on 13 August 2020.
- He was diagnosed with Type 2 diabetes on 26 February 2020 after reporting symptoms including frequent urination, fatigue, and blurred vision.
- The claimant's GP records show no mention of sleepiness or involuntary sleep before February 2020.
- The tribunal found the claimant was a disabled person from 20 February 2020 due to adverse effects on urination and from 18 May 2020 due to vision.
- The tribunal could not find that sleepiness or involuntary sleep was a substantial adverse effect at any relevant time.
- The claim proceeds to a final hearing on the remaining issues.
Timeline
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Employment commenced
Claimant started work as a Night Porter for the respondent.
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Claimant believes symptoms began
Claimant asserts he began experiencing blurry vision, frequent urination, and sleepiness around 2017, but no medical records support this.
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First GP visit for urinary symptoms
Claimant reported urgent desire to urinate; GP prescribed antibiotics and ordered tests.
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Diagnosis of Type 2 diabetes
GP diagnosed Type 2 diabetes based on symptoms including polyuria; Metformin prescribed.
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Bladder medication prescribed
Solifenacin prescribed for overactive bladder.
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Diabetes review
Blood sugar increased; additional medication Sitagliptin proposed.
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Fit note issued
GP issued fit note citing diabetes, poor control, and visual symptoms; first reference to visual symptoms.
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Occupational health assessment
Claimant reported feeling better; sleep disturbance noted; blurred vision attributed to unstable diabetes.
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Employment terminated
Claimant dismissed from his role as Night Porter.
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Preliminary hearing
Tribunal determined claimant was disabled from 20 February 2020 for urination and from 18 May 2020 for vision; sleepiness not established.
The legal issue
The tribunal had to decide whether the claimant's type 2 diabetes had a substantial and long-term adverse effect on his ability to carry out normal day-to-day activities such as urination, vision, and staying awake, and if so, from when he became disabled under the Equality Act 2010.
The outcome
The tribunal partially granted the claimant's application, ruling that he was a disabled person from 20 February 2020 due to adverse effects on urination and from 18 May 2020 due to vision problems. However, it could not find that sleepiness or involuntary sleep was a substantial adverse effect at any relevant time. The claim now proceeds to a final hearing on the remaining issues of unfair dismissal, disability discrimination, wrongful dismissal, and unlawful deductions from wages. No compensation was awarded at this preliminary stage.
Lessons & takeaways
- Keep a diary of symptoms and medical appointments from the earliest date to help establish when a condition becomes a disability.
- Ensure that all symptoms are documented by your GP, as tribunals rely heavily on medical records to determine disability status.
- If you believe you have a disability, seek legal advice early to understand what evidence is needed to meet the definition under the Equality Act 2010.
- Employers should obtain up-to-date occupational health reports and consider all symptoms when assessing whether an employee is disabled.
What this case shows in practice
This preliminary hearing illustrates the importance of medical evidence in disability discrimination claims. The night porter, who had worked for Peninsula Heights Management Company Ltd for nearly 14 years, was diagnosed with type 2 diabetes in February 2020 after reporting symptoms including frequent urination, fatigue, and blurred vision. The tribunal had to decide whether his condition amounted to a disability under the Equality Act 2010 at the relevant times.
The tribunal accepted that the claimant's urinary symptoms were a substantial adverse effect from the date of his first GP visit on 20 February 2020, and his visual symptoms from 18 May 2020 when a fit note was issued. However, his claim that sleepiness and involuntary sleep were also substantial effects was rejected, as there was no medical evidence to support this before or after his diagnosis.
What the losing side could have done differently
The respondent argued that the claimant was not disabled, but the tribunal found otherwise based on the GP records and the claimant's evidence. The respondent might have avoided the preliminary issue by accepting disability earlier and focusing on the merits of the discrimination claim. For employees, the key lesson is to ensure all symptoms are recorded by a healthcare professional, as the tribunal will not rely solely on the claimant's own account.
Why the result matters for similar claims
This case confirms that the date of disability can be established from the first medical consultation, even if the condition is later diagnosed. It also shows that not all symptoms of a condition will automatically be considered substantial adverse effects. The case now proceeds to a full hearing where the tribunal will consider whether the dismissal and any treatment amounted to discrimination.
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