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How to Write a Professional Sick Leave Application: Best Formats & Templates

Manish
Jun 15, 2026 10:19 AM
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Sick Leave Application

This guide provides essential tips and proven templates for crafting a professional sick leave application for both academic and corporate environments. Whether you are a student addressing a principal or an employee notifying a manager, a formal letter is a critical step in documenting your health-related absence, ensuring your leave request is clear, professional, and approved.

We have curated a comprehensive selection of sick leave templates tailored to various health conditions, ranging from common illnesses like viral fever, coughs, and colds to more severe medical issues such as typhoid or food poisoning.

Sick Leave Application Format

  1. Introductory paragraph- It is required to introduce yourself and you will have to introduce yourself in a polite way you should get to your point. Your introductory paragraph should be written such that it gives a basic idea to a reader about your Sick Leave application.
  2. The body- This is the part of an application in which you can include the reason for Sick Leave and other facts related to dates. The body of a letter should include all the essential details.
  3. The concluding paragraph- In this part, you should successfully sign off in a respectful and polite way.

Tips to Write An Application for Sick Leave in English

Follow these professional best practices to ensure your sick leave application is polite, concise, and effectively communicated to your Principal or Manager:

  • The address of the recipient must be mentioned.
  • Mention the subject of your sick leave application.
  • Start your application letter with a polite tone.
  • Mention the disease name which you are suffering from.
  • Mention the remark of the physician about your sickness.
  • Mention the number of days required to leave.
  • Appreciate the action of the recipient.
  • The name and your standard should be mentioned.

Sick Leave Application for School

The following section outlines standard formats and sample applications to guide your correspondence with a school principal.

Sample 1: Sick Leave Application due to Viral fever to Principal 

To,

The Principal,

Stella Maris Convent High School,

Lucknow, Uttar Pradesh.

Subject: Application for two-day sick leave due to viral fever.

Respected Sir/Madam,

I am writing to formally notify you that I have been diagnosed with a viral fever. My physician has advised me to undergo two days of complete bed rest to facilitate a full and speedy recovery.

Therefore, I kindly request that you grant me leave for two days, from [Date] to [Date]. Thank you for your consideration.

 

Sincerely,

Yours faithfully,

Rupam Ojha

Sample 2: Sick Leave Application Due To Typhoid to Principal

To,

The Principal,

City Montessori School,

Lucknow, Uttar Pradesh.

Subject: Request for medical leave due to typhoid diagnosis.

Respected Sir/Madam,

I am writing to inform you that I have been diagnosed with typhoid. My doctor has strongly recommended one week of complete rest to ensure an effective recovery.

Given this medical advice, I kindly request that you grant me leave for one week, effective from 11th September 2022 to 18th September 2022.

I appreciate your support and understanding regarding this health matter.

 

Thank you.

Yours sincerely,

Jayant Singh

Sample 3: Format for Sick Leave Application In School due to Headache

To,

The Principal,

St. Xavier's High School,

Lucknow, Uttar Pradesh.

Subject: Urgent sick leave application.

Respected Sir/Madam,

I am writing to inform you that I have been suffering from a severe headache since yesterday. Although I attempted to attend classes, the pain has intensified, making it difficult for me to continue my studies.

Consequently, I request that you grant me leave for two days, from 1st September 2022 to 2nd September 2022.

Thank you for your kindness and consideration.

 

Thank you.

Yours sincerely,

Anish Mishra

Sick Leave Application for Office

Below are professional formats and templates designed for submitting a formal sick leave application in a corporate office environment.

Sample 1: Sick Leave Application in case of Chicken Pox

To,

The Manager,

Ryan Group Pvt. Ltd.,

Haryana.

Subject: Application for medical leave due to chickenpox.

Respected Sir/Madam,

I am writing to inform you that I have been diagnosed with chickenpox. As this is a highly contagious condition, I am advised to refrain from attending the office for the next month. As a dedicated employee, I look forward to returning fully recovered. I appreciate your understanding during this time.

Thank you for your professional consideration.

 

Thank you.

Yours sincerely,

Faruk Ali

Sample 2: Sick Leave Application in case of Food Poisoning 

To,

The Manager,

Tata Motors Pvt. Ltd.

Subject: Sick leave application due to food poisoning.

Respected Sir,

I am writing to inform you that I have been suffering from severe food poisoning, which has required hospitalization. My doctors have advised me to take two additional days of rest to recover completely.

I kindly request you to grant me leave for these two days. My medical reports are attached for your reference; I intend to return to work as soon as I am cleared.

Thank you for your cooperation and support.

 

Yours sincerely,

Aakash Shukla

Sample 3: Sick Leave Application in case of Back Pain

To,

The Manager,

State Bank of India,

Subject: Sick leave application due to severe back pain.

Respected Sir,

I am writing to inform you that I am experiencing severe back pain that is hindering my ability to work. I have a medical appointment today to address this, and I believe it is necessary to take two days of rest to prevent further complications.

During this absence, I will manage urgent matters online where possible. My doctor's report is attached for your review. Thank you for your support.

Thank you.

Yours faithfully,

Rahul Singh

 

Sick Leave Application - FAQs

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