How to Write a Letter of Resignation Due to Illness


When you leave a job for any reason, you should write and submit a resignation letter to your employer to give them advance notice and professional respect. However, circumstances sometimes dictate that the resignation take effect immediately, as in the case of an unforeseen illness. In this article, we walk through the process of writing a resignation letter to retire from a job due to critical illness, along with several examples to help you write your own.

A resignation letter is an official letter written by an employee informing an employer of the employee’s intention to leave their current position. A resignation letter is often considered legal notice of departure and is usually kept on the employee’s file after they have left their position for proof of resignation, if necessary in any future investigation.

When leaving a position due to illness or health problems, it is not always possible to give advance notice. An illness resignation letter is an acceptable form of notification to your employer and is useful when you need to let them know that your medical conditions are preventing you from carrying out the day-to-day responsibilities of your job. This formal notice should make it possible to facilitate the terms of amicable resignation.

Related: How To Hand In A Resignation Letter (With Tips & Examples)

How to write a letter of resignation due to illness

When you resign for any reason, including serious illness, your resignation letter can be sent by email or as a formal letter in business format. Here are the things you need to include in a basic illness resignation letter:

  1. Greeting
  2. Declaration of resignation and date of the last working day
  3. reason to leave
  4. Thank you and good wishes
  5. Closure and signature

1. Greeting

Your letter should begin with an appropriate greeting. This may be “Dear Mr./Mrs. Last name” Where “Dear first name“based on your relationship with your supervisor and your office level agreement.

2. Declaration of resignation and date of the last working day

The opening paragraph of your letter should include the statement that you are resigning from your position and your last scheduled day of work.

3. Reason for departure

You can use the following paragraph to explain why you are leaving if you want to share this information. Remember, you don’t have to disclose details about your situation and this step is purely based on your comfort level.

4. Thank you and good wishes

Use your last paragraph to thank your company or supervisor, expressing appreciation for the experience you have gained with the company and the opportunities you have enjoyed there. You can, if you wish, invite your supervisor to keep in touch, personally or professionally, and include your personal details so that they can do so. As an option, you can offer to ease the transition, either by helping to find a replacement for your role or by training a replacement before your last day.

5. Closure and signature

Close with appropriate validation such as “Truly” Where “Sincere friendships“followed by your signature and your first and last name entered. You can reiterate your contact details under your entered name. In an e-mail, your contact details must always appear in your signature.

Related: 6 Essentials For A Resignation Letter: What To Include In Your Resignation Letter (More Tips & Examples)

Resignation letter template due to illness

You can follow this template to create your letter:

[Your name]
[Your address]
[Your city, state zip code]
[Your phone number]
[Your personal email address]
[Date of letter]

[Recipient/Employer name and title]
[Name of company]
[Company address]
[City, state zip code]

Dear [Recipient]:

This letter is to serve as my resignation from [Position] To [Company], effective [Resignation date].

I am resigning with regret due to a serious health complication. My doctors and I believe it would be best to stay focused on recovery, which unfortunately includes stepping down from my post at [Company], because I am not able to meet the expectations [Position] while fighting this disease.

I couldn’t be more grateful for all the opportunities I had to grow up and make lifelong friendships during my time at [Company]. I want to thank you deeply for your advice and support during my employment.

Please let me know how I can help you make the transition as smooth as possible. I wish you and [Company] the best in the future.


[Your signature] (paper letter)

[Your typed name]
[Your phone number or personal email] (optional)

Related: How To Explain Your Reasons For Leaving A Job (With Examples)

Examples of resignation letter due to illness

If you find yourself in a situation where you have to quit your job for medical reasons, using a sample resignation letter due to illness can help you start writing your own. Here are some examples of resignation letters due to illness:

  • Example 1: Resignation with more than two weeks notice
  • Example 2: Immediate resignation
  • Example 3: Resignation with two weeks notice
  • Example 4: Email

Example 1: Resignation with more than two weeks notice

Deanna moore
767 Thatcher Road West
Encino, CA 91316
June 14, 2013

Paulette Yates, Director of Communications
Marketing Volt, LLC
222 Carpenter Avenue, Ste. 1F
Encino, CA 91316

Dear Paulette,

As of the date of this letter, please accept this notification stating that I intend to resign my position as Events Coordinator at Marketing Volt. My last day of work will be July 15, 2013.

It is with deep regret that I am stepping down from this post. Due to persistent health problems, it is no longer possible to perform my duties within the company.

I would like to thank you for the advice, support and growth opportunities I have enjoyed during the four years I have worked for the company. If I can help in any way to make the transition smoother, please let me know.

If you need any further information, please do not hesitate to contact me at the number below.


Deanna Moore (signed)

Deanna Moore (typed)

Example 2: Immediate resignation

Paul Bock
7063 Purple Finch Road
Durham, North Carolina 27703
(754) 878-2647
June 27, 2019

Mr. Phillip Harlowe
Human Resources Director
Transshipping, Inc.
637, boulevard du Nord
Durham, North Carolina 27703

Dear Mr. Harlowe:

It is with deep sadness that I must inform you of my decision to immediately resign as Account Manager for TransShipping, Inc. due to my failing health. At this time, it is recommended by my team of physicians that I retire from the workplace to better focus on restoring my health.

I have enjoyed working at TransShipping, Inc. so much, and I am deeply saddened that I will no longer be associated with the company in the future.

I understand that sufficient notice of my intention to leave is expected, but unfortunately I am not well enough to complete the notice period, which is why I have requested immediate release.

I will be available sporadically (depending on my pain) if you want me to help train the person who will replace me. Thank you for everything you have done to contribute to my professional development, and do not hesitate to keep in touch.


Paul Bock (signed)

Paul Bock (typed)
(754) 878-2647

Related: Your Emergency Resignation Letter: How To Do It Right (With Samples)

Example 3: Resignation with two weeks notice

Kenneth ruiz
Floor supervisor
Supply Master Manufacturing
261 hill road
Vincentown, NJ 08088
August 30, 2019

Neil robbins
Human Resources Director
Supply Master Manufacturing
261 hill road
Vincentown, NJ 08088

Dear Mr. Robbins,

Please accept this letter as notice of my resignation due to a serious illness which I have recently been diagnosed with. My last day of employment as a Floor Supervisor at Supply Master Manufacturing will be September 16, 2019.

You may or may not know that I am in the early stages of thyroid cancer and will be starting treatment soon. My doctors have insisted that it is in the best interest of my recovery to focus entirely on my health for the foreseeable future.

I hope my departure will not cause undue stress or inconvenience. I will be working for the next two weeks to complete as many unfinished projects as possible. I am happy to help train a replacement. Please feel free to call me at (646) 546-8436 or email me at for any reason.

Thanks for your support and understanding.


Kenneth Ruiz (signed)

Kenneth Ruiz (typed)
646) 546-8436

Example 4: Email

Subject: Resignation — Joshua Lambert

Dear Mr. Adkins,

I regret to inform you of my resignation, effective June 26, 2020. Due to a recent diagnosis of cancer, I will require extended treatment and recovery, and I do not know if my ability to perform my job duties will be restored.

I appreciate your understanding. If there is anything I can do to help during the transition let me know.


Joshua Lambert
475-268-2648 (mobile)

Related: Best Examples of Resignation Letters for Personal Reasons

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