Long Term Sickness Absence: How long do you have to wait before dismissing?

Where an employee has been off sick for a long period of time employers face difficult decisions as to what extent they accommodate the absence before considering bringing the relationship to an end. These decisions are often complicated by the possibility that the employee may be considered disabled under the Equality Act and the additional obligations that apply in such circumstances, in particular the duty to make reasonable adjustments.

In the recent case of O’Brien v Bolton St Catherine’s Academy, the Court of Appeal considered whether it was discriminatory for the respondent school (the School) to have dismissed an employee who had been absent on long term sick leave for well over 12 months.


The Claimant, Ms O’Brien, worked as a teacher at the School. In March 2011 she was attacked by a pupil and subsequently suffered anxiety, depression and post-traumatic stress disorder. She went off sick in December 2011.

After over a year’s absence Ms O’Brien was dismissed on grounds of medical incapacity. She appealed that decision and at the appeal hearing produced a “fit for work” note and additional medical evidence. The decision to dismiss was upheld as the medical evidence was not clear and her return to work was uncertain.

Ms O’Brien subsequently pursued a claim against the School for, amongst other things, disability discrimination.


The Employment Tribunal upheld Ms O’Brien’s claim of disability discrimination, primarily on the basis that the School had not properly considered the new medical evidence that she had produced at the internal appeal.

The School successfully appealed to the Employment Appeal Tribunal and Ms O’Brien took the matter to the Court of Appeal.

The Court of Appeal upheld Ms O’Brien’s appeal and in doing so found that the School should have considered:

  • the, admittedly vague, “fit for work” note signed by Ms O’Brien’s GP; and
  • a letter from a psychologist that made recommendations as to a course of treatment.

It was unreasonable for the School to disregard this additional evidence and it should have obtained its own further evidence to confirm the position.  This was despite the fact that Ms O’Brien had, by this stage, been absent for some seventeen months and that neither document provided an equivocal view as to her likely return to work.


This decision will not be comforting for schools’ dealing with issues of long term sickness absence and highlights the care that needs to be taken prior to reaching a decision to dismiss.

In particular, it emphasises that the length of an employee’s absence, in itself, will not necessarily be a sufficient reason to justify dismissal where there is additional evidence to be considered. In this case, the School had accommodated Ms O’Brien’s absence for well over a year and yet its decision to dismiss was still found to constitute disability discrimination.

This does not, however, mean that there will never come a point at which it is reasonable for an employer to draw the line in cases of long term absence and each case will depend on the individual circumstances. Careful thought should, however, be given to additional evidence provided by an employee relating to their fitness for work prior to a decision to dismiss being reached.

For specific advice or queries, please contact Oliver Daniels on 01242 246 448 or odaniels@hcrlaw.com.

Harrison Clark Rickerbys has 450 staff and partners based at our six offices, who provide a complete spectrum of legal services to both business and private clients, regionally and nationwide. To contact our teams, click on the links below for our:


Oliver Daniels
Associate Solicitor
Direct Dial: +44 (0)1242 246448
Email: odaniels@hcrlaw.com