Do You Actually Need a Doctor’s Note for Mental Health?
In the UK, whether you need a doctor’s note for mental health depends on one thing: how many days you’ll be off work. For 7 days or less, including weekends, you don’t need to see a GP at all. You can simply self-certify. Only once an absence stretches beyond a week does a formal note come into play. Since 2010, that note has officially been called a fit note.
This surprises a lot of people. Partly, that’s because “getting signed off” still conjures up the image of a mandatory GP visit. For short-term stress, anxiety, or a rough patch, that’s simply not how the system works.
Self-Certification: The First 7 Days
If you’re off for a week or less, you don’t need a doctor’s note for mental health at all. According to ACAS guidance, your employer shouldn’t even ask for medical evidence. Instead, you self-certify. That simply means telling your employer you’re unwell, then filling in a short form when you return — often an SC2, available on GOV.UK.
You don’t need to disclose a diagnosis to self-certify. Writing “stress” or “anxiety” is enough, and you’re not legally obliged to explain further. However, there’s one exception worth knowing: if the cause is work-related, say bullying or an unmanageable workload, mentioning that can trigger your employer’s duty to look into it.
Getting a Fit Note: Day 8 Onwards
Once an absence passes 7 calendar days, your employer will usually ask for a doctor’s note for mental health. This is officially called a fit note, and it has to come from a registered healthcare professional. Importantly, that’s no longer limited to GPs. In England, Scotland, and Wales, nurses, pharmacists, physiotherapists, and occupational therapists can all issue one too. As a result, getting a note is considerably faster than it used to be.
How to Actually Get One
- Contact your GP surgery and ask for an appointment specifically for a fit note
- Many practices offer telephone consultations, so an in-person visit often isn’t required
- Be honest about your symptoms — GPs see mental health-related fit notes constantly
- The note can specify “not fit for work” or “may be fit for work,” often with suggested adjustments like reduced hours
There’s no NHS charge for a fit note once you’ve been off more than 7 days. A private fee may apply only if you request one earlier than that. That’s simply because self-certification is meant to cover the first week instead.
What a Mental Health Fit Note Looks Like
A doctor’s note for mental health doesn’t need to share every detail of what you’re going through. Typically, it states something general, like “stress-related illness” or “anxiety.” It’ll also confirm whether you’re unfit for work, or fit with adjustments. Nothing more is required. Your employer isn’t entitled to demand extra detail beyond what the note itself provides.
Your Rights While You’re Off
Whether you’re self-certifying or working from a formal doctor’s note for mental health, UK law protects you in a few specific ways.
- Equal treatment: mental health absence carries the same legal protections as physical illness. An employer can’t penalise you simply for taking legitimate sick leave.
- Statutory Sick Pay: you’re entitled to SSP if you meet the eligibility criteria, whether the illness is physical or mental.
- No obligation to over-disclose: you control how much detail you share beyond what’s medically necessary.
- Return-to-work flexibility: you don’t technically need a fit note to return. You can go back once you feel able to.
That said, frequent absences can still prompt an employer to follow standard capability procedures. Even then, they must consider reasonable adjustments first, rather than jumping straight to formal action.
A Quick Worked Example
Say you’re off sick from a Monday. If you return the following Monday, that’s 7 calendar days. No GP note needed — self-certification covers it. But if you’re still off on the Tuesday after that, you’ve crossed into day 8. From that point, your employer can reasonably ask for a fit note.
If This Follows a Bad Stretch, Not Just a Bad Day
Sometimes needing time off is just one isolated bad patch. Other times, it’s a sign of something that’s been building for a while. Not sure which applies to you? Our guide on what to do on a bad mental health day can help. It walks through how to tell a single rough day apart from a longer pattern worth raising with your GP.
Frequently Asked Questions
Can my employer ask what specifically is wrong with me?
No. A fit note provides enough medical evidence on its own. You’re not obligated to give extra clinical detail beyond what the note states.
Does a mental health fit note affect future job applications?
No. Sickness records stay confidential between you, your employer, and your GP. They don’t appear on references, and they don’t follow you into future roles.
Can I get a fit note without seeing a GP in person?
Often, yes. Many GP surgeries offer telephone consultations specifically for fit notes. Some even allow requests through the NHS App or an online form.
What if I can’t get a GP appointment in time?
Let your employer know as soon as possible, and explain the delay. Once you do get an appointment, providing the fit note a little late is generally fine — as long as you’ve kept your employer informed.
Needing a doctor’s note for mental health isn’t a bureaucratic hurdle designed to catch you out. Self-certification exists so short-term struggles don’t require unnecessary GP visits. And the fit note process exists so that longer recovery has proper medical backing, exactly when you need it most. For more on related topics, see our complete mental health guide.