Respiratory illnesses — from the common cold to flu, COVID-19, chest infections, and pneumonia — remain among the most common reasons for sick leave in the UK. Here's when you need a note and how to get one fast.

THE 7-DAY RULE FOR RESPIRATORY ILLNESS

As with all illnesses, you can self-certify the first 7 calendar days of absence. After that, your employer can request a fit note.

Most mild respiratory illnesses (a cold, mild flu) resolve within 7 days, meaning many people won't need a note at all. But COVID-19 and more serious infections can keep people off work for much longer.

WHEN TO GET A FIT NOTE FOR RESPIRATORY ILLNESS

Consider getting a fit note if:

● Your illness has lasted more than 7 calendar days

● Your employer has asked for one (they may have a policy requiring notes earlier)

● Your illness is particularly severe — pneumonia, severe COVID, etc.

● You're at risk of complications and your doctor has advised rest

COVID-19 SICK NOTES

Since the end of the COVID-specific isolation rules, COVID-19 sick notes work exactly the same as any other illness. There is no longer a government-issued COVID certificate. If you need documentation of COVID absence, a standard fit note from a doctor covers this.

LONG COVID

Long COVID — persistent symptoms lasting weeks or months after the initial infection — can significantly affect the ability to work. Dr Sick can issue fit notes for Long COVID covering fatigue, breathlessness, cognitive difficulties ("brain fog"), and other symptoms.

HOW TO GET YOUR RESPIRATORY ILLNESS SICK NOTE FAST

At Dr Sick, our online consultation takes less than 10 minutes. Describe your symptoms, how long you've been unwell, and how they're affecting your ability to work. Our doctors review your case and issue your fit note same day.

No appointment. No waiting room. Visit drsick.co.uk.