Long-Term Sickness: When Can You Dismiss and How Do You Get There Safely?

You have an employee who has been off sick for weeks, maybe months. You have been paying sick pay, covering their workload, and waiting for news that simply is not coming. The rest of your team is under pressure. You are starting to wonder whether this situation will ever resolve itself, and whether you are within your rights to do anything about it.

You are not alone. Long-term sickness is one of the most stressful situations any employer faces, and it is also one of the most legally risky if you get the process wrong.

The good news is that long-term sickness dismissal is a recognised and legally valid reason for ending employment in the UK, provided you follow the right process. This post explains exactly what that process looks like, what your obligations are, and how to reach a defensible outcome without landing yourself in front of an employment tribunal.

What Counts as Long-Term Sickness?

There is no fixed legal definition, but in practice most HR advisors and employment tribunals treat an absence of four weeks or more as long-term. At that point, statutory sick pay rules, fit note obligations, and the employer's duty to consider reasonable adjustments all come firmly into play.

It is worth saying clearly: the fact that an employee is on long-term sick leave does not protect them from dismissal indefinitely. What the law requires is that you follow a fair, documented, and considerate process before you reach that outcome. If you skip steps, rush the process, or fail to explore alternatives, you are exposed.

Your Legal Framework Before You Start

UK employment law recognises dismissal on the grounds of capability, which covers both poor performance and ill health. Long-term sickness falls under the ill health category of capability dismissal. You can read the government's overview on the GOV.UK dismissal guidance page.

Before you take any formal steps, make sure you understand two things. First, you must have explored reasonable adjustments, particularly where the employee's condition may amount to a disability under the Equality Act 2010. Second, you must have gathered medical evidence to inform your decisions. Acting without medical information is one of the most common and costly mistakes employers make.

If your employment contracts and absence policies are not already in good shape, now is the time to look at them. Robust documentation protects you at every stage. You can find out how we help businesses get these foundations right on our employment contracts page and our policies and procedures page.

Step by Step: The Process You Must Follow

There is no shortcut here. If you want a long term sickness dismissal to be defensible, you need to follow each of these steps in sequence and document everything as you go.

Step 1: Keep in Regular, Sensitive Contact

Staying in touch with an absent employee is not just good practice, it is expected. Keep communication regular but not overwhelming. A brief check-in every couple of weeks is usually appropriate. Make it clear that you are asking about their wellbeing, not pressuring them to return.

Document every conversation, including the date, what was said, and what any next steps were.

Step 2: Obtain Medical Evidence

You cannot make informed decisions without a medical opinion. With the employee's consent, refer them to occupational health. An occupational health report will give you a clearer picture of the nature of the condition, the likely timescale for recovery, any risk of permanent incapacity, whether the employee is fit to attend a meeting, and what adjustments might support a return.

If the employee withholds consent, you can still proceed, but you must make clear that decisions may be made on the information available. Refusing to engage with occupational health will rarely help an employee's position at tribunal.

In some cases you may also want to obtain a report from the employee's own GP or specialist under the Access to Medical Reports Act 1988.

Step 3: Hold a Formal Welfare Meeting

Once you have medical information, invite the employee to a formal welfare meeting. This is not a disciplinary hearing. The purpose is to understand their situation, share your concerns about the impact on the business, and explore what options exist. The employee has the right to be accompanied by a colleague or trade union representative.

In this meeting you should cover the medical position and likely timescale for return, the impact their absence is having on the business and their colleagues, any reasonable adjustments that might make return possible, and whether a phased return could be considered.

For more on what a phased return involves, take a look at our blog post on phased return to work.

Step 4: Consider Reasonable Adjustments

If the employee's condition meets the legal definition of a disability under the Equality Act 2010, you have a duty to consider reasonable adjustments before you can contemplate dismissal. Reasonable adjustments might include a phased return to work, changes to working hours or patterns, alternative duties or a different role, removal of specific tasks that aggravate the condition, or additional equipment or support.

What is reasonable depends on the size of your business, the cost involved, the practicality of the change, and whether it would actually help. Small businesses are not expected to make unlimited adjustments, but they are expected to genuinely consider what is possible and document that consideration.

Step 5: Review and Reconvene

Long-term sickness management is rarely resolved in a single meeting. You may need to revisit the situation several times, particularly if there is an expectation of improvement or a return date is being considered. Each review should be documented, and the employee should be kept informed of the business's position throughout.

If the prognosis is unclear, you may need to seek further medical evidence before proceeding. Patience is important here, but there is a point at which indefinite absence becomes unsustainable, and the law recognises that.

Step 6: Formal Capability Meeting

If, after following all the steps above, there is no reasonable prospect of return within an acceptable timeframe and no adjustments that would enable a return, you can move to a formal capability meeting. This meeting should be conducted in line with your absence or disciplinary procedure, the employee must be given written notice and the right to be accompanied, you must explain that dismissal is a potential outcome, and you must give the employee the opportunity to put forward their position.

Our team supports employers through this stage of the process day in, day out. You can find out more about how we help with capability and performance issues on our disciplinary and performance page and our dedicated long-term sickness management page.

Step 7: The Dismissal Decision

If the capability meeting confirms that there is no prospect of a sustainable return and you have exhausted reasonable adjustments, you can proceed to dismissal on grounds of capability. The employee must be given written notice of dismissal, the notice period set out in their contract, and the right to appeal the decision.

Provided you have followed each step, documented your decisions, sought medical advice, and given the employee a genuine opportunity to engage, the outcome is likely to be defensible.

Long-Term Sickness Process Checklist

Use this checklist to track where you are in the process and identify any gaps before you take the next step.

When Is Dismissal Defensible?

Long term sickness dismissal is most likely to be upheld at tribunal where you have followed a reasonable and documented process, obtained and considered medical evidence, genuinely considered and where relevant implemented reasonable adjustments, given the employee fair notice of the potential outcome, and acted consistently with how you have treated similar situations in the past.

Dismissal is hardest to defend when it is rushed, when there is no medical evidence to support the decision, when the employee was not given a proper opportunity to be heard, or when there are signs that the condition may be disability-related and no genuine adjustment process was followed.

A Note on Disability Discrimination

This is the area where employers most often come unstuck. If an employee's long-term condition amounts to a disability under the Equality Act 2010, you have additional obligations. A condition is likely to be classed as a disability if it has a substantial adverse effect on normal day-to-day activities and has lasted, or is likely to last, at least 12 months.

Mental health conditions, musculoskeletal problems, and chronic illnesses are all conditions that can meet this threshold. You do not need a formal diagnosis to owe a duty to consider adjustments. If there is a reasonable chance the condition qualifies, treat it as if it does.

Dismissing an employee with a disability without following a thorough adjustment process is one of the most straightforward routes to a tribunal claim, and awards can be uncapped where discrimination is found.

Managing Absence Before It Becomes Long Term

The best time to manage long-term sickness is before it becomes long-term. A clear absence policy, consistent return-to-work interviews, and early referral to occupational health can all reduce the likelihood of short-term absences escalating.

We have written about managing absence in more detail on the blog. If you are finding it difficult to stay on top of patterns and trends, it may also be worth looking at whether your employee handbook sets clear expectations around attendance and absence reporting. Most businesses we work with are surprised how much difference a well-written handbook makes.

You may also find our earlier post on managing absence in the workplace a useful companion to this one.

What Happens If You Get It Wrong?

An unfair dismissal claim can currently result in a basic award of up to approximately 21,924 GBP and a compensatory award of up to 115,115 GBP, depending on the employee's length of service, age, and earnings. Where disability discrimination is also claimed, the compensatory award is uncapped.

Beyond the financial cost, tribunal proceedings take time, energy, and management resource that most small business owners simply cannot afford to lose. The reputational impact, particularly in smaller communities, should not be underestimated either.

Getting the process right from the start is always less expensive than trying to fix it after the fact.

Get Support Before You Take the Next Step

Long-term sickness management is one of the most complex areas of employment law, and the stakes are genuinely high. If you are dealing with a situation right now and you are not sure where you stand, the most valuable thing you can do is speak to an expert before you take any formal action.

Our team works with business owners across Wiltshire and beyond, helping them navigate situations exactly like this one with clarity, confidence, and the right legal protection in place.

You can contact us here or book a free HR consultation call to talk through your situation with no obligation. We will give you a straight answer on where you stand and what your options are.