Long-Term Sickness Absence: Management Guide

Long-term sickness absence is any period of absence from work due to illness or injury that exceeds four consecutive weeks, though many UK employers define it as anything beyond 28 days. Extended absence represents a significant operational and human challenge — for the employee, their team, and the organisation. According to the CIPD Health and Wellbeing at Work Report 2025, the median cost of long-term absence to a mid-sized UK employer exceeds £12,000 per absent employee when factoring in temporary cover, lost productivity, and administrative overhead (CIPD, 2025).

Managing long-term sickness effectively requires a balance of empathy, structure, and compliance with UK employment law. You need to support the employee’s recovery while protecting the business and maintaining fairness across your workforce.

Key Takeaways

• Long-term sickness absence is typically defined as four or more consecutive weeks off work due to illness or injury.
• UK employers must follow a fair capability process before considering dismissal, including occupational health referrals and reasonable adjustments.
• Statutory sick pay (SSP) lasts up to 28 weeks at £116.75 per week in 2025/26, after which many employers offer enhanced sick pay.
• Regular, supportive contact during absence improves return-to-work rates and reduces legal risk.
• An occupational health assessment is the single most valuable step in understanding an employee’s condition and expected recovery timeline.

What Counts as Long-Term Sickness Absence?

In the UK, long-term sickness absence refers to any absence from work lasting four weeks or longer due to a physical or mental health condition. There is no statutory definition — employers set their own thresholds, but four weeks is the most widely used benchmark.

Common causes include:

• Musculoskeletal conditions — back injuries, joint replacements, repetitive strain injuries
• Mental health conditions — depression, anxiety, stress-related disorders, burnout
• Surgery and recovery — planned procedures with extended recovery, orthopaedic surgery
• Cancer — diagnosis, treatment, and recovery periods (covered by the Equality Act 2010 as a disability from point of diagnosis)
• Cardiovascular events — heart attacks, strokes, cardiac rehabilitation
• Chronic conditions — autoimmune diseases, long COVID, fibromyalgia

The distinction between short-term and long-term matters because the management approach differs significantly. Short-term absences are often managed with a trigger-based attendance policy, while long-term absence requires a more individualised, medically informed approach.

The Legal Framework: What UK Employers Must Do

UK employment law does not prescribe a specific process for managing long-term sickness, but several obligations apply:

Statutory Sick Pay (SSP)

Employers must pay SSP to employees who are off sick for four or more consecutive days. The 2025/26 rate is £116.75 per week, paid for up to 28 weeks. SSP is taxable and subject to National Insurance. After 28 weeks, SSP stops — and your contractual sick pay policy becomes critical.

Equality Act 2010

If an employee’s condition meets the definition of a disability (a physical or mental impairment with a substantial and long-term adverse effect on their ability to carry out normal day-to-day activities), you have a duty to make reasonable adjustments. Dismissing an employee without considering adjustments could constitute discrimination.

“Long-term” under the Equality Act means the condition has lasted or is likely to last for 12 months or more, or is likely to recur.

Capability Dismissal

If an employee cannot return to work, you may eventually need to consider dismissal on capability grounds. To do this fairly under the Employment Rights Act 1996, you must:

1. Consult with the employee and obtain medical evidence
2. Consider whether reasonable adjustments could enable a return
3. Explore alternative roles within the organisation
4. Follow a fair process — typically three stages (initial review, formal meeting, appeal)

Dismissing without following these steps exposes you to an unfair dismissal claim.

Step-by-Step: Managing Long-Term Absence

Step 1: Day One — Notify and Support

When an employee goes off long-term sick, your first response sets the tone. Contact the employee within the first few days to:

• Express genuine concern for their wellbeing
• Confirm what medical evidence you need (fit note, GP letter)
• Explain the support available (employee assistance programme, occupational health)
• Agree on a communication plan — how often you will check in and through which channel

Avoid setting rigid “check in every X days” rules without flexibility. Some employees recovering from surgery need weekly contact; others dealing with severe depression may find frequent contact distressing.

Step 2: Occupational Health Referral

An occupational health (OH) assessment is the most important tool in your management process. OH provides:

• A diagnosis (with the employee’s consent)
• An estimated recovery timeline
• Recommendations for adjustments, phased returns, or role changes
• An assessment of whether the employee’s condition constitutes a disability under the Equality Act

You can refer employees to an in-house OH service or an external provider. The referral should include specific questions about the employee’s fitness for their role, expected duration of absence, and any adjustments that could facilitate a return.

Step 3: Maintain Regular, Supportive Contact

Keep in touch with the employee throughout their absence. The CIPD recommends a minimum of monthly contact, but the frequency should be tailored to the individual.

Good practice:

• Frame contact as supportive, not surveillance. “How are you doing?” not “When are you coming back?”
• Keep records of all communications — dates, content, any actions agreed
• Involve the employee’s line manager in contact, but ensure HR oversees the process
• Do not apply attendance triggers to long-term absence — these are for managing short-term patterns

Step 4: Plan the Return to Work

When the employee is medically fit to return, the return-to-work process is critical to preventing relapse:

1. Conduct a return-to-work interview — this is a legal requirement for SSP purposes, but it should be a supportive conversation, not an interrogation
2. Consider a phased return — starting with reduced hours or duties for 2–4 weeks
3. Implement adjustments recommended by occupational health
4. Set a follow-up date — typically 4–6 weeks after return, to check how the employee is coping

Long-Term Sickness Absence Management Process

Stage	Action	Timeframe	Key Document
Absence begins	Contact employee, confirm support, request fit note	Day 1–5	Fit note / GP letter
Assessment	Referral to occupational health	Within 2 weeks	OH referral form
Review	Review OH report, agree adjustments	Within 1 week of OH report	OH report
Monitoring	Regular supportive check-ins	Monthly (or as appropriate)	Contact log
Return	Return-to-work interview, phased return	On medical clearance	RTW interview record
Follow-up	Post-return review at 4–6 weeks	After return	Follow-up notes

Common Mistakes Employers Make

The most frequent errors in managing long-term sickness absence include:

• Failing to make reasonable adjustments — dismissing an employee without exploring what changes could enable a return is a discrimination risk
• Ignoring mental health — depression and anxiety are among the most common causes of long-term absence in the UK, yet they are frequently undertreated
• Applying short-term absence triggers — attendance management policies designed for occasional sick days do not work for long-term conditions
• Poor record-keeping — if you cannot demonstrate a fair process, an employment tribunal will not side with you
• Delaying action — waiting 12 months before doing anything creates both operational strain and legal uncertainty

Frequently Asked Questions

How long is long-term sickness absence?

There is no statutory definition. Most UK employers classify absence as long-term when it exceeds four consecutive weeks. Some organisations use a 28-day threshold. The important distinction is that long-term absence requires a different management approach than short-term absence — focused on medical evidence, reasonable adjustments, and individual support rather than trigger-based policies.

Can you dismiss an employee on long-term sick leave?

Yes, but only after following a fair capability process. This includes obtaining medical evidence, consulting with the employee, considering reasonable adjustments, exploring alternative roles, and providing the employee with the opportunity to respond. Dismissal must be a last resort — premature dismissal risks an unfair dismissal or disability discrimination claim.

What happens to pension contributions during long-term sickness?

During statutory sick pay, employer pension contributions usually continue at the normal rate, depending on your scheme rules and contractual policy. During any enhanced or unpaid sick leave period, contributions may reduce — check your pension scheme rules and employment contracts. Some employers continue full contributions for a defined period before reducing them.

Do I have to pay sick pay for 28 weeks?

Statutory sick pay lasts up to 28 weeks. Many employers offer enhanced sick pay that matches or exceeds full pay for a period (commonly 1–6 months), after which pay may reduce to SSP or half-pay. Your contractual obligations depend on what your employment contract or employee handbook states. If there is no contractual sick pay entitlement, you only need to pay SSP.

How often should I contact an employee on long-term sick leave?

Monthly contact is the general benchmark recommended by the CIPD, but the frequency should be tailored to the individual’s condition and preferences. Some employees may prefer less frequent contact. Always frame communication as supportive — not as monitoring or pressure to return — and keep detailed records of every interaction.