Illness Leave Letter

Illness is never planned but unfortunately renders you unable to do much about it. If you recently fell ill and are unable to attend work, you will need to write an illness leave letter addressed to your supervisor or the human resources department. Here we will not only show you how to write an illness leave letter but will also give you samples and a template to follow when you are writing your own letter.

Tips for Writing an Illness Leave Letter

  • Give some information about the illness you are suffering from.
  • Quote your doctor if necessary.
  • Give the exact dates you will be taking leave on.
  • Give an expected date of return if possible.
  • If necessary, you can leave your contact information for emergency cases.
  • Offer to attach medical records and prescriptions if required.


  • 1

    Sample of an Illness Leave Letter #1

    Aidon Acton
    25 Bridgestone Street
    Dunwich DU3 4WE

    October 18, 2009

    Abigail Alasdair
    Head of Back Office Department
    Oceana Bank Limited
    466 Main Street
    Philadelphis, PA 112233

    Dear Alasdair,

    I am writing this letter to request an illness leave for medical reasons. I have been suffering from Dengue fever since last night and the doctor has suggested one-week complete bed rest.

    Given all this, I will not be able to attend office from October 19th, 2009 to October 26th, 2009. I can provide you with doctor’s prescription and medical reports, if necessary, and will try my best to make up for the lost time once I return to work.

    Thank you so very much for your kind consideration.

    Yours truly,

    Aidon Acton

  • 2

    Illness Leave Letter Sample #2

    Aiden Aberle
    388 Western Road
    Ipswich IP3 5RT
    0046 - 64763777

    November 22, 2010

    Kadim Kelph
    Vice Principal
    Kalen High School
    1123 Main Street
    Lake Avenue, NY 12300

    Dear Sir,

    I am writing this letter to request a 3-day leave on account of illness. There is severe inflammation in my tonsils and I am unable to speak or eat without pain. Therefore, the doctor has advised an operation to remove the tonsils, and I will need to take time off from work for it.

    I would like to take a week long leave, from November 23th, 2010 to November 29th, 2010. I know there is a lot of work which I need to do, but I will try my best to make up for it when I return.

    Looking ahead for your kind response.

    Yours sincerely,

    Aiden Aberle

  • 3

    Template of an Illness Leave Letter

    (Your Name)
    (Your Address)
    (Your City, State, Zip Code)
    (Your Phone Number)


    (Name of your head)
    (Designation of your head)
    (Name of your Organization)
    (Address of your Organization)
    (City, State, Zip Code)

    Dear (Mr./Mrs./Ms. Second name of your head),

    I have to regretfully inform you that I fell sick last night and will not be able to come to work for (Number of days). After getting a checkup I was told that I am suffering from (Your illness) and will need to (Doctor's proposed treatment).

    Hence, I would like to request that I be allowed to take leaves from (Start date) to (End date), and I expect to be back to work at (Return date).

    If there are any concerns, please feel free to let me know. If necessary, I would be willing to attach my medical records along with the application.

    Yours truly,
    (Your signature)
    (Your name)

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