⚠️ Managing prolonged staff absence or uncertain medical prognosis?
Capability & Health Guidance

Long Term Sickness and Capability: Employer Guide

An employee has been absent for months. Their role needs covering, the team is under pressure and you still do not know when they will return. Employers are allowed to manage long term sickness absence, but a defensible capability decision depends on understanding the facts and considering reasonable alternatives.

Author: Nectar HR Advisory Team | Legal Context: UK Employment Law, Equality Act 2010 & ACAS Code of Practice

At a Glance: Long-Term Sickness Protocol

  • No Fixed Timeframe: Tribunal fairness does not depend on a rigid number of weeks; decisions depend on medical prognosis and operational impact.
  • Occupational Health Role: Obtain objective medical advice on functional capabilities and phased returns before taking formal action.
  • Statutory Duty to Adjust: Under the Equality Act 2010, employers must explore reasonable adjustments, including amended duties or redeployment.
  • Separate Capability from Misconduct: Genuine illness is never a disciplinary issue—managing it under misconduct creates substantial tribunal liability.

When does sickness become a capability issue?

Capability concerns arise when ill health affects an employee's ability to fulfil their role. There is no universal number of weeks after which dismissal becomes appropriate. The relevant questions include prognosis, likely return date, the demands of the role, available support and the impact on the organisation.

Keep meaningful contact

Agree appropriate contact and review points. Ask about the employee's wellbeing, treatment progress where they are willing to share it, possible return timescales and adjustments. Avoid either excessive contact or leaving the employee with no communication for months.

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Long-Term Capability Framework: Welfare Contact, Medical Assessment, and Review Stages

Obtain relevant medical advice

An occupational health referral can help identify functional limitations, likely timescales and adjustments. Ask practical questions: Can the employee perform the essential duties? Might a phased return help? Are restrictions likely to be temporary or long lasting? Medical advice is important evidence, but it does not decide the employment outcome for you.

Consider reasonable adjustments

Where the employee has a disability, you may be required to make reasonable adjustments. Depending on the circumstances, options could include adjusted hours, amended duties, equipment, a phased return, flexible arrangements or consideration of suitable alternative roles. Whether an adjustment is reasonable depends on the particular situation.

What if the employee cannot give a return date?

An uncertain prognosis is difficult but does not remove the need for a fair assessment. Consider whether further medical evidence is likely to help, whether a review period is appropriate and what the continuing absence means operationally. Explain the situation transparently to the employee.

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Can I recruit a replacement?

You can plan cover for an absent employee, but take care with permanent replacement decisions. Consider contractual obligations, the employee's rights and whether a temporary arrangement would be more appropriate. Get advice before making changes that could undermine a potential return.

How does a formal capability process work?

A typical process involves consultation meetings, review of medical evidence, discussion of adjustments and alternatives, and clear communication about possible outcomes. Before dismissal, consider whether further time, a supported return or suitable alternative employment is realistic. Offer an appeal where appropriate.

Need advice managing a prolonged capability case?

We review medical reports, structure consultation meetings, and draft defensible capability documentation.

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What if they refuse occupational health?

Explain why the assessment is being requested and what information would be useful. If the employee declines consent, you may eventually have to make decisions based on the information reasonably available, but first consider their reasons and whether another route to obtaining relevant evidence is possible.

How Nectar HR can help

Nectar HR supports employers with complex sickness cases, occupational health questions, reasonable adjustments, formal capability meetings, redeployment considerations and dismissal risk assessments.

Practical Employer Guidance

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