You do not need a sick note for the first 7-days of illness. Your employer may require some evidence – for this you can fill out a self certification form which is available on the HMRC website – use form SC2 (you do not need a doctor for this). If your employer insists on a sick note for a period of less than or equal to 7-days, we can issue a private note but there is a charge for this (see private medical services page). For periods of sickness greater than 7-days your GP can issue a “fit-note”. For more information on fit notes go to HMRC website – fit note information.