One of our sales staff has recently returned to work after an operation on their ankle.  Pins were removed and they were told they could drive after one week.   Three weeks later they were still unable to drive as it was too painful.  We advised them to go back to their doctor and they have been signed off for a week to rest.  The staff wants to return to work but not drive. 

I am converned that we would not be fulfilling our duty of care if we  allow them to return on this basis.  The doctor has produced a note that says they are unfit to work. 

Has anyone else faced similar situations?