If illness is preventing you from working, use this workplace farewell letter to get extended leave.
Dear {Recipient(s)},
This letter is to notify you that I will be taking an extended leave of absence from {Company} due to illness. I will be leaving on {date} and will be away for an as-yet undetermined amount of time. My best projections have me returning in {month}, although if complications arise it may be as late as {month}.
During this time, {Coworker/Replacement} has agreed to come on board and shoulder most of my responsibilities, for which I am eternally grateful. I know that with {his/her} extremely competent help, I will have a faster, easier recovery period. Please direct all of your questions to {him/her} after {date}. Questions that are urgent/dire can be forwarded to me at {contact information}, but due to my illness I may be delayed in my responses.
I apologize for any inconvenience that this causes. I want to thank everyone who has already expressed their good wishes to me during this difficult time in my life. I appreciate the support and hope to be back in action soon!
Sincerely,
{Sender}
