A fit note is a doctor’s statement of an employee’s fitness for work. The fit note is designed to encourage employers, employees and doctors to move away from a rigid system of employees being either fit or unfit to work and towards a more flexible approach placing the emphasis on what employees are able to do at work, thus helping sick employees to return to work as soon as they are able.
Decline in fit note requests during Covid put down to greater 'leniency' by bosses.