Managing long-term sickness absence is one of the most complex challenges employers face.
It’s not just about business disruption, it’s about balancing employee wellbeing, legal responsibilities, and making the right decisions with limited information.
Handled well, it can support a clearer, earlier and more effective resolution for both the employee and the business. Handled poorly, it can lead to prolonged absence, disengagement, and increased risk for your business.
So where should you start?
What is long-term sickness absence?
In the UK, long-term sickness absence is typically defined as 4 weeks or more away from work due to illness or injury.
The most common causes include:
- Stress, anxiety and depression
- Musculoskeletal conditions (e.g. back pain)
- Chronic health conditions
- Recovery following surgery or serious illness
Long-term sickness absence is a growing challenge for employers across the UK. According to the Office for National Statistics (ONS), 149 million working days were lost to sickness in 2023/24, with stress, mental health conditions and musculoskeletal issues among the most common causes.
This highlights the importance of having a clear, structured approach to managing absence particularly when cases become long-term.
Long-term absence impacts more than just workload.
It can affect:
- Team morale and productivity
- Business continuity
- Employee confidence and engagement
- Legal and compliance obligations
As an employer, you have a duty of care under the Health and Safety at Work Act, as well as responsibilities under the Equality Act 2010.
It is also important for organisations to have a clearly documented absence policy in place. This helps ensure consistency, supports fair decision-making and provides a structured framework for managing absence appropriately across the business.
Getting the process right protects both your employee and your organisation. These are the steps to manage long term sickness absence:
Step 1: Maintain regular, supportive contact
One of the biggest mistakes employers make is either saying too little… or saying too much in the wrong way
Regular, compassionate check-ins help as they:
- Reduce isolation
- Build trust
- Keep communication open
- Set expectations around return to work
The key is to keep it supportive, not pressurising.
Step 2: Understand the medical situation (within reason)
You don’t need and shouldn’t ask for full medical details.
But you do need enough information to understand:
- How the condition impacts their ability to work
- Whether recovery is likely
- Potential timescales
This is where many employers hit a wall. GP fit notes often provide limited guidance which is why Occupational Health input becomes valuable at this stage.
Step 3: Consider an Occupational Health referral
If absence is ongoing or unclear, referring to Occupational Health early can make a significant difference.
An OH assessment can help you understand:
- Fitness for work
- Likely recovery timelines
- Whether the Equality Act may apply
- What reasonable adjustments may be needed
- Whether a phased return is appropriate
Early referral = better outcomes.
Step 4: Plan a structured return to work
A return to work shouldn’t be a “back to normal overnight” approach.
In many cases, a phased return is more appropriate, such as:
- Reduced hours initially
- Adjusted duties
- Temporary role modifications
- Additional support or supervision
This helps employees rebuild confidence while reducing the risk of relapse.
Step 5: Consider reasonable adjustments
If an employee has a long-term health condition or disability, you may be legally required to make reasonable adjustments under the Equality Act 2010.
These could include:
- Flexible working arrangements
- Changes to workload or responsibilities
- Adjustments to the working environment
- Additional training or support
Occupational Health can guide what is appropriate, practical and sustainable.
Step 6: Document everything clearly
Keeping clear records is essential.
This includes:
- Absence dates
- Communication with the employee
- Medical or OH reports
- Decisions made and why
This protects your business and ensures consistency and fairness.
Step 7: Take a long-term view
Not every situation resolves quickly.
Some employees may:
- Need extended support
- Return in a modified capacity
- Require ongoing adjustments
Taking a long-term, realistic approach leads to better outcomes than rushing decisions.
How Occupational Health supports this process
Managing long-term sickness absence is where Occupational Health adds the most value.
At Fleet Street Clinic, we support employers with:
- Management referrals
- Fitness-for-work assessments
- Return-to-work planning
- Mental health support
- Advice on reasonable adjustments
- Complex case management
We provide clear, practical guidance so you can make informed decisions with confidence.
There’s no one-size-fits-all approach to long-term sickness absence but one thing is clear:
Early, structured and supportive management leads to better outcomes for everyone.
If you’re currently managing long-term sickness absence and need guidance, our Occupational Health team is here to help.
Get in touch with Fleet Street Clinic today to discuss how we can support your business and your employees.
