Do I Need a Sick Note for Work?

If you have been unwell and need time off work, one of the first questions you will probably ask is: do I need a sick note? The answer depends on how long you are away, your employer's specific policies, and whether you are claiming Statutory Sick Pay (SSP). In this guide, we break down the rules so you know exactly where you stand.

The 7-Day Self-Certification Rule

Under UK law, if you are off work for 7 calendar days or fewer (including weekends and bank holidays), you do not need a doctor's note. Instead, you can "self-certify" your absence. This usually means filling in a form - sometimes called an SC2 form - when you return, or simply notifying your employer in writing.

Self-certification is a legal right. Your employer cannot force you to see a doctor for absences of 7 days or less, although their internal policies may request that you call in by a certain time or provide a written statement.

If you want a deeper breakdown of SC2 forms, calendar-day counting, and what employers can ask for during the first week, read our detailed self-certification sick note guide.

When Your Employer Can Request a Medical Certificate

From day 8 onwards, your employer has the legal right to ask for a medical certificate (commonly called a fit note or sick note). This document must be issued by a registered medical practitioner - either your NHS GP or a private doctor.

However, some employers have stricter policies. Certain companies - particularly in finance, healthcare, and education - may ask for medical evidence from day 1. While they cannot override the law on self-certification for SSP purposes, they can make it a condition of paying contractual sick pay. Always check your employment contract or staff handbook.

Fit Note vs Sick Note: What Is the Difference?

Since 2010, the UK has used "fit notes" (officially called Statements of Fitness for Work) rather than the old-style sick notes. The key difference is that a fit note does not just say you are too ill to work. It can also recommend that you may be fit for work with adjustments such as:

• Amended duties or lighter workload
• Altered hours or flexible working
• Workplace adaptations (e.g., ergonomic equipment)
• A phased return to work

Your employer is not obligated to make these adjustments, but they should discuss them with you. If they cannot accommodate the recommendations, you are treated as unfit for work for the duration of the note.

What About Statutory Sick Pay (SSP)?

To qualify for SSP, you must:

• Be classed as an employee and have done some work for your employer
• Earn an average of at least £123 per week (2024/25 threshold)
• Have been ill for at least 4 consecutive days (including non-working days)

SSP is paid from the 4th qualifying day of illness at a rate of £116.75 per week (2024/25). For the first 7 days, self-certification is enough. From day 8, your employer will need a fit note to continue paying SSP.

Can I Get a Sick Note Without Seeing My GP?

Yes. You do not have to visit your NHS GP to get a valid medical certificate. Private online services like DoctorCert allow you to request a certificate from a GMC-registered doctor through a secure online form. The doctor reviews your medical details and, if appropriate, issues a certificate - often on the same day.

This is particularly useful if:

• Your GP surgery has no available appointments
• You are too unwell to travel to a surgery
• You need a certificate urgently for your employer
• You are away from your registered GP area

How DoctorCert Works

1. Complete a short online form - describe your condition and the dates you need covered.
2. A GMC-registered doctor reviews your request - every case is assessed by a real, qualified doctor.
3. Receive your certificate by email - typically within hours. You can forward it directly to your employer.

The cost is a flat fee of £29. If the doctor determines they cannot issue a certificate, you receive a full refund.

Frequently Asked Questions

Can my employer refuse a private medical certificate?

Private certificates issued by GMC-registered doctors are widely accepted by UK employers. However, for SSP purposes, the legal requirement is a "statement of fitness for work" from a registered medical practitioner. A private doctor meets this criterion. If your employer has specific concerns, they may ask you to see their own occupational health provider separately.

Do I need a sick note for 1 day off?

No. Under UK law, you can self-certify for absences of up to 7 days. A single day off never requires a medical certificate, though you should follow your employer's reporting procedures.

Can I get a backdated sick note?

Yes. A doctor can issue a certificate for a recent period of illness, typically covering up to 14 days in the past. You will need to explain your symptoms and when they occurred.

What conditions can an online sick note cover?

Common conditions include colds and flu, back pain, migraines, stomach bugs, stress and anxiety, minor injuries, and post-operative recovery. The doctor will assess whether your condition is appropriate for a remote certificate.

Is an online sick note legitimate?

Yes. Certificates issued by DoctorCert are signed by GMC-registered doctors and include a unique verification code. They are legitimate medical documents.

Summary

For absences of 7 days or less, you can self-certify - no doctor's note needed. From day 8, your employer can request a medical certificate. You do not have to use your NHS GP; private services like DoctorCert offer a fast, affordable alternative reviewed by GMC-registered doctors.

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Need a medical certificate?

If you need signed medical evidence for work, study, or administrative purposes, you can request a private medical certificate online from a GMC-registered doctor, usually issued within 2 hours during business hours. See the one-off pricing and how private medical certificates work before you start.