Is it a professional failing to be off sick?
No. Everyone gets ill, and many professionals live with long-term physical or mental health conditions and practise safely for decades. Yet healthcare staff often work through illness and exhaustion because the rota is short, they do not want to let colleagues down, or they worry about sickness absence triggers. Surveys reported in the nursing press suggest that more than half of NHS nurses in England have worked while unwell.
The professional question is not whether you are ever ill. It is how you manage your health: whether you notice when it may be affecting your practice, seek advice, and make changes to keep patients safe.
What do the GMC, NMC, HCPC and GPhC expect?
You do not need to tell your regulator about every illness. You do need to take responsibility for managing your health safely.
| Regulator | Key expectations |
|---|---|
| GMC | Look after your health, be registered with a GP, and consult a suitably qualified colleague if a condition or its treatment could affect your judgement or performance, or could be passed to patients. Follow their advice rather than relying on your own assessment of the risk. |
| NMC | Be aware of, and reduce as far as possible, any potential for harm from your own health, and act if it may affect your ability to practise safely. Health and character declarations are made at registration and revalidation. |
| HCPC | Change how you practise, or stop, if your physical or mental health may affect your performance or judgement or put others at risk. |
| GPhC | Act in patients' interests and use professional judgement, which includes recognising when your own health may affect safe practice. |
When should you not go to work?
Use your local sickness and infection control policies, but these are the common situations where staying away is the safe choice.
- Vomiting or diarrhoea. Many NHS policies ask staff to stay away until they have been symptom-free for 48 hours. Check yours.
- Fever or flu-like illness, or another infection that could spread to vulnerable patients.
- Symptoms or medicines that make you drowsy, slow your reactions or cloud your judgement.
- Mental health symptoms that mean you cannot concentrate, communicate or make decisions safely.
- Exhaustion to the point where you are making slips or struggling to stay awake.
- Decide honestly: Use a self-check (below). If you are infectious or cannot concentrate safely, do not work.
- Tell your employer early: Use your local sickness reporting route as soon as you can so cover can be arranged. Early notice is safer for patients and fairer to colleagues.
- Get advice: See your GP for diagnosis and treatment. Contact occupational health if a condition may affect your work longer term or you are unsure whether you are safe to return.
- Plan your return: After a longer absence, a return-to-work meeting and occupational health advice can set up adjustments such as a phased return, reduced on-call or a break from nights.
Can you be too tired to work safely?
Yes. Fatigue is reduced mental and physical capacity caused by lost sleep, long periods awake, body clock disruption or heavy workload. It is not the same as feeling sleepy, and people are poor at judging their own level of impairment. You can feel you are coping while your performance has clearly dropped.
Two things drive it. Sleep pressure builds the longer you are awake. The body clock makes most people least alert in the early hours, roughly 2am to 6am, with a smaller dip in the early afternoon. That is why the end of a night shift and the first night of a run carry extra risk.
| Effect of fatigue | What it looks like on shift |
|---|---|
| Reduced attention | Missing a change in observations or an abnormal result |
| Slower processing | Taking longer in an emergency or over a calculation |
| Poor working memory | Losing track during a drug round or forgetting a task |
| Microsleeps | Lapses of a few seconds, often unnoticed, and very dangerous when driving |
| Riskier decisions | Accepting the easy explanation, fixating, cutting corners |
| Irritability | Being short with people and less likely to ask for help |
What are your rights on rest and breaks?
Your employer has a duty of care for your health and safety under the Health and Safety at Work etc. Act 1974, which includes managing fatigue risks from shift work. The Working Time Regulations 1998 give most workers an average maximum 48-hour week unless they opt out, at least 11 consecutive hours' rest in each 24-hour period, and a rest break when the working day is more than six hours. NHS contracts and rota rules often go further, for example for resident doctors. Check your contract and local policy.
If you have a condition that counts as a disability under the Equality Act 2010, your employer must consider reasonable adjustments, such as changes to hours, duties or night working.
Managing fatigue on shift
- Take your breaks. They are a safety measure. Agree cover so everyone gets one.
- On nights, a nap of around 20 minutes can help. Allow a few minutes after waking before safety-critical tasks.
- Use caffeine earlier in the shift rather than near the end.
- Eat light meals and drink water regularly.
- Ask for a second check on calculations and high-risk medicines in the early hours.
- Tell the person in charge if you are too tired to work safely so tasks can be reallocated.
A quick self-check before every shift
The I'M SAFE checklist, borrowed from aviation, takes under a minute.
| Letter | Ask yourself |
|---|---|
| I: Illness | Do I have symptoms that could affect my work or spread to patients? |
| M: Medication | Am I taking anything, prescribed or over the counter, that could affect alertness or judgement? |
| S: Stress | Is anything at work or home affecting my concentration or mood? |
| A: Alcohol | Could alcohol from last night still be affecting me? |
| F: Fatigue | How much have I slept in the last 24 hours and the last few days? |
| E: Eating | Have I eaten and drunk enough today? |
If you are struggling mid-shift, say so in plain words. For example: "I've been awake since early yesterday and I'm making slips. Can someone check this infusion calculation with me, and can I take a break in the next half hour?" That sentence protects patients.
Burnout and mental health: where can healthcare staff get help?
Burnout is usually described as emotional exhaustion, detachment or cynicism about work, and a reduced sense of achievement. Warning signs include dreading work, poor sleep even when you can rest, more small mistakes, withdrawing from people, irritability, and using alcohol or other substances to cope. Internationally educated staff may also be dealing with separation from family, a new system and financial pressure.
| Source | What it offers |
|---|---|
| Your GP | Assessment, treatment and referral. Register rather than self-treat. |
| Occupational health | Confidential advice on fitness for work and adjustments. They advise your employer on what you can do without sharing clinical details unless you consent. |
| NHS Practitioner Health | A confidential, mainly self-referral mental health and addiction service for NHS staff in England who cannot get confidential care locally. Check its website for current eligibility. |
| Staff wellbeing and employee assistance | Confidential counselling through many NHS employers. |
| Unions and professional bodies | The BMA, RCN, RCM and others offer advice and support. Pharmacist Support helps pharmacists and their families. |
Seeing your GP, occupational health or a confidential service does not mean you will be reported to your regulator. Referral is generally only considered when there is a risk to patients that cannot be managed locally and the professional is not engaging with advice.
Reflecting on an incident linked to fatigue or illness
Kemi, a staff nurse, is on her fourth night in a row with a heavy cold and little daytime sleep because of building work next door. At 5am she prepares an IV antibiotic at twice the intended concentration. A colleague's question makes her recheck, and she catches it before it is connected. She reports the near miss.
I made a calculation error because I was tired. It wasn't my fault as we were short-staffed and I'd been ill. There was no harm. I'll try to get more sleep.
On my fourth night I miscalculated an IV dilution that would have given twice the intended concentration. I had slept only a few hours each day, had a cold, and it was 5am, when errors are more likely. I knew I was not at my best but did not tell the nurse in charge or ask for a second check, because I did not want to seem unable to cope. I now use I'M SAFE before every shift, ask for an independent check of IV calculations after 2am, have seen occupational health about my sleep, and agreed with my manager to limit runs to three nights while the building work continues. We will review this over three months.
Where a regulator is involved in a health matter, it may agree arrangements such as undertakings or conditions, for example reports from a treating doctor or limits on certain work. If you are under investigation, seek advice from your defence organisation, trade union or legal representative before responding.
Learning more about practising safely
Our course Practising Safely When Unwell or Fatigued covers regulator expectations, the science of fatigue, self-check tools, support services and how to build a personal health plan and reflection. If a fatigue-related error involved medicines or notes, Medication Errors: Reflection and Remediation and Record Keeping and Documentation: Remediation Course go into those areas. Completing a course does not decide the outcome of any process, but it can help you understand and evidence your learning.
Frequently asked questions
Should a nurse go to work with a cold?
It depends on how unwell you are and where you work. A mild cold may not stop you working, but consider whether you can concentrate safely and whether you work with very vulnerable patients, such as on oncology or neonatal units. Follow your local infection control and sickness policy, and ask occupational health or your manager if unsure.
How long should healthcare staff stay off after diarrhoea and vomiting?
Many NHS infection prevention policies ask staff to stay away from work until they have been free of symptoms for 48 hours, because gastrointestinal infections such as norovirus spread easily to patients and colleagues. Policies vary, so check your employer's current policy and speak to occupational health or infection control if you are unsure.
Do I have to tell the NMC or GMC if I am ill?
Not for every illness. You must manage your health so it does not put patients at risk, seek advice and follow it. Nurses and midwives make a health and character declaration at registration and revalidation. Doctors must consult a suitably qualified colleague if a condition could affect their practice. Check your regulator's guidance for specifics.
Can I refuse to work an extra shift because I am too tired?
Extra shifts are usually voluntary, and you should not accept work you cannot do safely. The Working Time Regulations give most workers rights to daily rest and breaks, and your contract may add more. If you are pressured to work when unsafe, raise it with your manager or a Freedom to Speak Up Guardian, and seek union advice if needed.
Will going to occupational health get me reported to my regulator?
No, not simply for using the service. Occupational health gives confidential advice on your fitness for work and adjustments, and does not share clinical details with your employer without consent. Regulator referral is generally only considered when there is a risk to patients that cannot be managed locally and advice is not being followed.
What is NHS Practitioner Health?
NHS Practitioner Health is a confidential, mainly self-referral mental health and addiction service for NHS staff in England who feel unable to get confidential care through local routes. It helps with conditions such as depression, anxiety, burnout and addiction. Eligibility rules change, so check the service's website before referring yourself.
Is it safe to drive home after a night shift?
Only if you are alert. Drowsy driving after nights is a well-recognised risk for healthcare staff, and microsleeps can happen without warning. If you feel sleepy, take a short nap before leaving, use a rest room, take public transport or a taxi, or arrange a lift. Opening windows or loud music does not reliably help.
Related courses
Practising Safely When Unwell or Fatigued
This course explains how physical illness, mental health problems and fatigue can affect your clinical performance, and what your regulator expects…
Medication Errors: Reflection and Remediation
This course explains why medication errors happen, what you must do when one occurs, and how to show a regulator or employer that you have understood…
Record Keeping and Documentation: Remediation Course
This course explains what good clinical documentation looks like, why record-keeping concerns arise, and why altering or falsifying a record is…
Sources and further reading
- Good Medical Practice (2024). General Medical Council.
- Guidance on health and character. Nursing and Midwifery Council.
- Standards of conduct, performance and ethics. Health and Care Professions Council.
- Managing shift work: health and safety guidance (HSG256). Health and Safety Executive.
- Working Time Regulations 1998. legislation.gov.uk.
- Healthcare staff in England. NHS Practitioner Health.
Practitioner Insight is an independent education provider. It is not affiliated with or endorsed by the GMC, MPTS, NMC, HCPC, GPhC or any NHS organisation, and this information is not legal advice. If you have been referred to a regulator, speak to your defence organisation, trade union or legal representative.
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