UK Career FAQ · 2026 Guide
Can I Be Dismissed While on Sick Leave UK?
What it means
UK employees on sick leave are protected from immediate dismissal. The right to be off sick during genuine illness is statutory. However, this protection isn't absolute — long-term sickness can eventually lead to capability dismissal if you genuinely can't return, but only after a structured fair process.
How it works
Capability process typically: (1) Welfare meeting after significant absence (3-6 months continuous). (2) Occupational health referral for independent medical assessment. (3) Discussion of return options, adjustments, alternative roles. (4) Formal capability hearing. (5) Decision: continued employment with adjustments, alternative role, or capability dismissal. (6) Right to appeal. The process typically takes 6-18 months from first concerns to dismissal.
What to do
Engage actively with the process. Attend welfare meetings, occupational health appointments, and capability hearings. Document everything. Bring a colleague or trade union representative. Request reasonable adjustments under Equality Act 2010 if you have a disability. Consider whether your condition meets disability definition (substantial + long-term effect) — adds significant protections.
Common mistakes
Common UK sickness dismissal mistakes by employees: (1) Disengaging from the process — makes capability dismissal easier to justify. (2) Missing occupational health appointments. (3) Not raising disability claims when applicable. (4) Failing to suggest reasonable adjustments. (5) Resigning instead of forcing the formal process — loses unfair dismissal claim option.
Worked example
Rachel has been off with chronic fatigue for 14 months. Company sick pay ended at month 12. Capability process started at month 8: OH assessment, welfare meetings, exploration of phased return. After phased return attempt failed, formal capability hearing. Outcome: dismissal with notice + pension preservation. Rachel files unfair dismissal claim — the issue: did employer genuinely consider all reasonable adjustments? Settled at ACAS for £18,000.
Recruiter pro tip
If your sickness might meet disability definition under Equality Act 2010, get medical confirmation and disclose to employer formally. Disability claims have higher tribunal compensation (no cap on disability discrimination) and require employer to make reasonable adjustments — significantly stronger position than ordinary sickness.
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