Sickness Certificates
You do not require a doctor's sickness certificate for any illness lasting seven days or less. If your employer asks you for a sick-line, you should complete a self-certification form (SC2) which is available from your employer, the job centre or on the HMRC website. Please note, the surgery does not supply these forms.
Evidence that you are sick
If you are sick for more than seven days, your employer can ask you to give them some form of medical evidence to support payment of SSP (statutory sick pay). If you expect you will be off work for more than a week, please make a routine appointment with the GP to receive your medical certificate.
If you need it extended thereafter, you don't need a routine appointment. Please book for a sick-line extension, which are usually done Monday to Friday from 11.30am.
It is up to your employer to decide whether you are incapable of work. A medical certificate, now called a 'Statement of Fitness for Work’ (see below) from your doctor is strong evidence that you are sick and would normally be accepted, unless there is evidence to prove otherwise.
You could also provide evidence from someone who is not a medical practitioner, e.g. a dentist. Your employer will decide whether or not this evidence is acceptable. If your employer has any doubts, they may still ask for a medical certificate from your GP.
Statement of Fitness for Work - ’Fit Note'
The 'fit note' was introduced on 6 April 2010. With your employer's support, the note will help you return to work sooner by providing more information about the effects of your illness or injury.
For more information see the DirectGov website (where this information was sourced)