Sick Note for Headache: UK Sickness Rules, Tension Headaches & Work Rights

Headaches are among the most common neurological complaints in the United Kingdom, yet severe and chronic headache disorders are often misunderstood in the workplace. While occasional mild headaches can be managed with over-the-counter pain relief, severe headache disorders, such as chronic tension-type headaches, cluster headaches, and cervicogenic headaches, can be completely disabling. These conditions cause intense, persistent pain, cognitive clouding, visual disturbances, and extreme sensitivity to light and sound. For employees whose roles require intense concentration, prolonged screen time, or physical exertion, a severe headache makes it impossible to work safely and productively. Understanding your employment rights and how to obtain proper medical evidence is crucial.

Managing a sickness absence due to severe headaches requires a clear understanding of UK sickness rules, including self-certification limits and the requirements for obtaining a fit note. This clinical guide covers the statutory rules for sickness absence, eligibility for Statutory Sick Pay (SSP), clinical diagnostic standards, red flags that require urgent medical attention, and recommended workplace adjustments. By understanding these guidelines, employees can ensure their sickness absence is properly documented and their rights are protected.

DoctorCert offers an online request for a private medical certificate. Complete the booking questionnaire accurately; a GMC-registered doctor reviews the information and may decline the request or need further information. This is a documentation assessment, not a replacement for examination, tests, treatment or your usual care team. Check the service scope, price and refund policy before booking.

UK Sickness Rules and Self-Certification for Headaches

Under UK employment regulations, you can self-certify your sickness for the first seven consecutive calendar days of your absence. This means that if you are off work due to an acute headache episode for a week or less, you do not need to provide a doctor's note to your employer. Instead, you declare yourself unfit for work by completing a self-certification form, such as the SC2 form. This period includes all calendar days, including weekends and bank holidays. Sickness reporting policies require you to notify your manager on the first day of your absence. This initial self-certification is a standard legal right for all workers.

For sickness lasting more than seven calendar days, the employer can ask for a fit note or agree suitable alternative evidence. Ask the service responsible for your care about the assessment and tell the employer if evidence is delayed. A private certificate is a separate option only where it meets the recipient's requirement. Medical care should follow the symptoms, not the paperwork timetable.

To avoid any gaps in your medical evidence, you should request a fit note as soon as it becomes clear that your recovery will extend past the first week. Delayed submissions can lead to delays in your sick pay. While some employers may request a medical certificate earlier, they cannot legally withhold Statutory Sick Pay for the first seven days based on the lack of a doctor's signature, as self-certification is the statutory minimum under DWP guidelines. However, private company sick pay schemes may have their own early certification requirements.

Follow the sickness reporting procedure and keep a record of when you notified your employer. For SSP, medical evidence is not normally required for the first seven calendar days. If early evidence is requested for another purpose, clarify what document is needed, whether private evidence is accepted and who covers the fee. A company policy does not replace the statutory SSP evidence rules.

Statutory Sick Pay and Sickness Pay Entitlements

If you take time off work due to severe headaches, you may be entitled to receive Statutory Sick Pay (SSP) or Occupational Sick Pay (OSP). To qualify for SSP under UK law, you must have an employment contract and have done some work under it. You must have been sick for at least one full working day. SSP is paid at £123.25 per week or 80% of your normal weekly earnings, whichever is lower, for up to 28 weeks. It is subject to standard tax and National Insurance deductions.

SSP is paid for all full days you are off sick that you would normally have worked. There is no longer a waiting period before payments begin. However, many UK employers offer Occupational Sick Pay (OSP) schemes, which pay full or partial salary from the first day of sickness. You should check your employment contract to verify your eligibility for OSP and the evidence requirements. Some company policies require a medical certificate from day one of absence, which can be met with a private sick note.

Part-time and zero-hours employees may qualify for SSP under the remaining rules even at low earnings. If you have more than one employer, eligibility is assessed for each employment. A private medical certificate is clinical evidence following an assessment; it is not automatically the same document as a statutory Med3 fit note. An employer may agree to accept appropriate alternative evidence. Confirm the required document before paying, especially for SSP. A GMC registration number or verification code confirms the issuer or authenticity, not guaranteed acceptance or entitlement.

If your employer fails to process your sick pay or disputes your medical evidence, you can contact the HMRC Statutory Payment Dispute Team. They have the authority to investigate SSP complaints and issue binding decisions on employers. To support your case, you should maintain a record of all fit notes, emails, and reporting forms. Having a clear audit trail of your medical certificates, including secure digital private notes, is crucial to protecting your rights.

Clinical Assessment, Diagnostics, and Management

When evaluating a patient with headaches, a doctor will focus on identifying the type of headache and ruling out any serious underlying causes. The diagnosis is primarily based on a detailed medical history and a physical examination. Common types of headaches include tension-type headaches, which present as a dull, aching pain on both sides of the head; cluster headaches, which cause intense, piercing pain around one eye; and cervicogenic headaches, which originate from issues in the neck. If the doctor suspects a secondary headache cause, they may refer you for a brain scan (MRI or CT).

A sudden extremely painful headache, or a headache with new weakness, speech problems, confusion or loss of vision, requires emergency help. Other new, worsening or persistent headaches need appropriate clinical advice. Do not use a presumed tension-headache label or an online sick-note request to rule out serious causes.

The right treatment depends on the type of headache and the person's health and medicines. Migraine treatment should not be presented as the standard treatment for every tension headache. Discuss recurrent symptoms with a clinician and ask a pharmacist about safe symptom relief.

Frequent use of headache medicines can itself contribute to headaches. Tell the clinician which medicines you use and how often, including non-prescription products. Do not stop prescribed treatment or start a withdrawal plan solely from this article.

Furthermore, stress management is a critical pillar of chronic headache therapy. Cognitive behavioral therapy (CBT) and relaxation techniques, such as mindfulness meditation and progressive muscle relaxation, have strong clinical evidence for reducing the frequency and intensity of tension headaches. Your doctor may refer you to a clinical psychologist or suggest local support groups to help you develop effective coping mechanisms, particularly if your headaches are linked to work-related stress or anxiety.

Workplace Adjustments and Phased Return to Work

Returning to work after recovering from a severe headache episode or while managing a chronic headache disorder requires careful planning. Under UK health and safety laws, employers have a duty to support employees returning from sickness absence. A fit note marked may be fit for work allows your doctor to recommend specific, temporary adjustments to help you manage your symptoms and perform your duties safely. These modifications are aimed at reducing exposure to known triggers.

Common workplace adjustments for employees returning from headache-related sickness include:

• Reduction in Screen Time: Prolonged computer use can cause eye strain and trigger tension headaches. Adjustments should include frequent, short breaks away from screens and a temporary reduction in screen-based tasks.
• Anti-Glare Filters and Blue-Light Glasses: Using anti-glare screen covers or wearing blue-light filtering glasses can help reduce visual strain and manage headache triggers.
• Ergonomic Workspace Assessment: Poor posture can contribute to neck tension and cervicogenic headaches. An ergonomic review of your desk, chair, and screen height is highly recommended.
• Modification of Lighting: Fluorescent lighting can trigger headaches. Employers should consider dimming overhead lights, providing task lighting, or allowing the employee to work in natural light.
• Provision of a Quiet Workspace: Noise can exacerbate headache pain. Allowing the employee to use noise-canceling headphones or work in a quiet area helps manage symptoms.

For a statutory fit note marked may be fit for work, discuss the suggested changes with the employer. If the changes cannot be agreed, the same note can normally support sickness procedures without a replacement note. Whether SSP or contractual pay is due still depends on the applicable rules. A private certificate has its own agreed purpose.

In addition to lighting and screen adjustments, employers should consider offering flexible working arrangements, such as core-hour agreements or the option to work from home on days when symptoms are developing. Working in a familiar, controlled home environment allows employees to manage early-stage headache symptoms without the added stress of a commute or a noisy open-plan office. A supportive and flexible approach from management can significantly reduce sickness absence rates and improve long-term productivity.

How DoctorCert Can Help with Your Sickness Evidence

At DoctorCert UK, we understand that traveling to a GP surgery when you are suffering from a severe headache or sensitivity to light and noise is difficult and painful. Our digital healthcare platform offers a secure, convenient alternative, allowing you to secure a valid private medical certificate online from the safety of your home.

Our platform is designed to make obtaining medical evidence simple and secure:

• Explain the symptoms, relevant dates and how they affect your work in the booking questionnaire.
• A GMC-registered doctor reviews the request. Issuance and the dates covered depend on that assessment.
• If approved, the private certificate is sent digitally. Confirm that the recipient accepts this evidence before requesting it.
• If the doctor cannot issue a certificate, the published refund policy applies. Seek appropriate medical care for symptoms.

Before payment, ask the recipient to confirm the document and dates it needs. If it wants a statutory or specialist form, check that the service can provide it rather than assuming that a general private letter is interchangeable.

Our asynchronous service allows you to request a fit note at any time of day, without waiting on hold for a GP receptionist or sitting in a brightly lit waiting room, which can worsen your symptoms. A DoctorCert private medical certificate provides your employer with formal clinical evidence of your condition and clear recommendations for workplace adjustments, helping you establish a constructive dialogue with your manager to support your return to work.

Frequently Asked Questions

Can I get a sick note for a tension headache online?

Use accurate dates and describe the symptoms and work effects in your own words. The booking questionnaire is an information-gathering step, not a promise that the reviewing doctor can issue the requested evidence.

How long will I be off work with a severe headache?

There is no standard number of days off or certificate length for this condition. The decision depends on symptoms, their effect on the actual job, available evidence and clinical judgement. Recovery estimates describe groups of patients; they are not a personal return date or a promise of the dates a service can certify.

Is a chronic headache considered a disability under UK law?

Yes, under the Equality Act 2010, a chronic headache disorder can be considered a disability if it has a substantial, long-term adverse effect on your ability to carry out normal day-to-day activities, lasting or expected to last twelve months or more.

Can my employer reject a private sick note for headaches?

Ask the recipient whether it accepts a private medical certificate for this purpose. A DoctorCert assessment is for private sickness evidence; it does not automatically produce the statutory Med3 document or establish SSP entitlement. The clinician decides whether the information supports a certificate and the dates requested. If a particular form is required, confirm that before paying.

Sources and guidance

Guidance checked on 9 October 2026. GOV.UK SSP amounts; GOV.UK sickness evidence.

Keep a useful headache and work record

Note when headaches occur, how they differ from your usual symptoms and which tasks become difficult. Record medicines and frequency for the treating clinician. This is more useful than choosing a migraine label because a particular certificate seems easier to obtain.

For an established migraine pattern, the migraine work-evidence guide covers that narrower topic. New or unusual symptoms need appropriate assessment rather than assumptions from either article.

• Describe concentration, vision or other work effects accurately.
• Ask about treatment for recurrent symptoms.
• Use urgent services for the warning symptoms described above.

Editorial sources and scope

Sources checked on 16 October 2026: NHS guidance.

This article provides general information. It is not an individual clinical assessment or employment-law decision. A private certificate is issued only where the reviewing doctor can support it, and the recipient decides whether it meets the required purpose.

In Great Britain, disability protections depend on the Equality Act definition, including the effect on everyday activities; a diagnosis or long absence alone is not the whole test. Northern Ireland has separate disability discrimination law. Ask for advice about your circumstances rather than assuming that one rule covers every workplace.

Related guidance

Request an assessment; Online sickness evidence.