You do not require a sickness certificate if you have been off for 7 days or less. If your employer asks you to complete a self-certification form it is available here.
If you are sick for more than 7 days your employer can request some evidence in the form of a Med3 certificate. It is also called a “fit note” and is designed to help your employer support your return to work sooner by providing more evidence about your illness. For more information visit the link here.
