In the UK, you don't always need a doctor's note when you're off sick. For short-term illness, self-certification covers you. Here's exactly how it works.

WHAT IS SELF-CERTIFICATION?

Self-certification means telling your employer that you were ill without providing a doctor's note. You're essentially confirming your own absence on a form — no medical evidence required.

HOW LONG CAN YOU SELF-CERTIFY FOR?

You can self-certify for up to 7 consecutive calendar days. After that, your employer can require a fit note from a healthcare professional.

THE CRITICAL DETAIL: CALENDAR DAYS, NOT WORKING DAYS

This catches a lot of people out. The 7-day count includes weekends, bank holidays, and any days you don't normally work. If you fall ill on a Friday, Saturday and Sunday both count.

Examples:

● Ill Monday to Sunday = 7 days → no fit note needed

● Ill Monday to the following Monday = 8 days → fit note needed

● Ill Friday to the following Sunday = 9 days → fit note needed

WHAT FORMS DO YOU NEED FOR SELF-CERTIFICATION?

Your employer may have their own form, or they may use the government's SC2 form. The SC2 is available on GOV.UK and simply records the dates you were absent. You typically complete this when you return to work.

CAN YOUR EMPLOYER REQUIRE A NOTE EARLIER?

Yes — some employers specify in their employment contract or HR policy that they require a note for absences of even one or two days. This is legal. Check your contract.

WHEN SELF-CERTIFICATION ISN'T ENOUGH

Once you pass the 7-day threshold, or if your employer asks for a note sooner, you'll need a fit note from a healthcare professional. Dr Sick issues these same day, from GMC-registered UK doctors, with no need for a face-to-face appointment.

Visit drsick.co.uk for fast, affordable fit notes.