With humble regards, I would like to inform you that I ________ (name) working as a ________ (designation) will be unable to attend the office for the next ________ (days/weeks)
It is to notify you that I have been suffering from ________ (fever /cold /sore throat /mention illness) from the last ________ (duration). My family doctor has advised me to take complete bed rest for at least ________ (number of days) for speedy recovery.
Kindly, sanction leaves till __/___/____ (date) so that I can recover and resume my work as soon as possible.
________ (Contact details)