Application for Sick Leave – Office & School Formats

Application for Sick Leave: Office & School Formats

When you're sick, it's essential to formally inform your school or workplace by writing a proper sick leave application. A well-written application helps keep things professional, clear, and aligned with school or work policies.

This guide will cover sick leave formats, samples, and best practices to help you write a practical leave application tailored to your needs.

What Is a Sick Leave Application?

A sick leave application is a formal way to inform your school, workplace, or any institution that you won’t be able to attend due to illness. Typically, it includes the duration of your absence along with relevant details about your condition. Submitting a well-structured leave request ensures transparency, demonstrates responsibility, and helps maintain compliance with institutional policies.

Application for Sick Leave Meaning

In simple terms, an application for sick leave is a formal request to temporarily excuse your absence from duties because of health-related issues. This document typically includes:

• The reason for leave (illness or medical condition)
• The duration of the requested leave
• Any supporting medical documentation, if required

By clearly outlining these details, the application ensures that your responsibilities are managed in your absence.

Related: How to Write an Office Leave Application

Common Reasons for Sick Leave

People often need to apply for sick leave in workplaces and schools due to health issues. A well-written application for sick leave should mention the reason for absence, expected recovery time, and supporting documents like a doctor’s note.

Below are common reasons for sick leave and examples of sick leave applications to help you draft a professional request.

1. Fever or Flu – Sick Leave for Fever Application

A high fever, flu, or viral infection can make working or attending school difficult. It’s best to take one to two days of leave for recovery and to prevent spreading illness to others.

Example Sick Leave Application for Fever:

"I suffer from high fever and flu symptoms and cannot attend work/school today. I request two days of sick leave for proper rest and recovery."

2. Injury or Accidental Trauma – Sick Leave for Injury

Depending on medical advice, a fracture, sprain, or other injuries may require short-term or extended sick leave.

Example Sick Leave Application for Injury:

"I had an accidental injury and have been advised by my doctor to take rest. Kindly approve my leave for one week to recover."

3. Mental Health Issues – Application for Sick Leave Due to Stress

Mental health concerns like stress, anxiety, or depression can require short-term or medical leave based on severity. Many workplaces now recognize mental health leave as a valid reason.

Example Sick Leave Letter for Stress:

"Due to severe stress and anxiety, I am unable to focus on my work. I kindly request a three-day medical leave to prioritize my mental health recovery."

4. Child’s Illness – Leave Application to Take Care of a Sick Child

Parents or guardians may need to take sick leave to care for a sick child or family member.

Example Sick Leave Application for Child’s Illness:

"My child is unwell and needs medical attention. I request emergency leave to take Care of them during this time."

5. Hospitalization and Surgery – Long-Term Sick Leave Application

Employees often need to submit a long-term sick leave request with medical proof for major surgeries or medical procedures.

Example Application for Sick Leave Due to Surgery:

"I have been admitted to the hospital for a surgical procedure and will require two weeks of medical leave for post-surgery recovery. A doctor’s note is attached for reference."

6. Migraine or Chronic Pain – Short Sick Leave Request

Conditions like migraine, back pain, or joint pain can cause sudden incapacity, requiring short-term leave.

Example Leave Application for Migraine:

"I am experiencing a severe migraine attack and am unable to concentrate on work. I request one day of leave to recover."

7. Preventive or Health Check-ups – Medical Leave for Tests

Some employees or students may need time off for routine medical check-ups or diagnostic tests.

Example Sick Leave Request for Medical Check-Up:

"I have a scheduled health check-up and need a half-day leave to attend my medical appointment."

8. Recovery from Illness – Post-Illness Sick Leave

After recovering from an illness, weakness, or fatigue may require additional rest before resuming work.

Example Sick Leave Letter for Post-Illness Recovery:

"Following my recent illness, I am still feeling weak and need two more days of sick leave for a complete recovery."

9. Postpartum or Maternity Leave – Sick Leave After Childbirth

New mothers often need postpartum recovery leave or extended maternity leave due to health complications.

Example Sick Leave Application for Postpartum Recovery:

"I am currently in the postpartum recovery phase and require an extension of my medical leave as advised by my doctor."

10. Infectious Diseases – Sick Leave for Contagious Illness

If you are diagnosed with COVID-19, flu, chickenpox, or other infectious diseases, taking sick leave is essential to avoid spreading it to others.

Example Sick Leave Application for Contagious Illness:

"I have tested positive for an infectious illness and will be quarantined for five days as per medical advice. Kindly grant me leave during this period."

How to Write an Application for Sick Leave

 Below, we outline how to write practical sick leave applications tailored to office and school requirements. Here’s a breakdown for both scenarios:

How to Write a Sick Leave Application for Office

1. Follow Company Guidelines: Address the application to your manager or HR. Use a formal subject like "Sick Leave Request."
2. Include Essential Information: Mention your name, position, department, and the leave duration. Clearly state the reason for leave.
3. Keep the Tone Professional: Use respectful and concise language. Avoid unnecessary details but provide enough context for approval.
4. Mention Work Arrangements: Specify task delegation or your availability during leave. This shows responsibility toward work obligations.
5. Use a Template for Efficiency: Templates save time and maintain structure. Customize them easily to fit your leave request.
6. Comply with Company Policies: Check if documentation, like a medical certificate, is required. Follow policy to avoid delays in approval.

Related: Best Practices for what to include in your sick leave letter

How to Write a Sick Leave Application for School

1. Follow School Protocols: Begin with a formal salutation and follow your school's guidelines for leave applications. Mention your relationship with the student.
2. State Key Details Clearly: Provide the student’s full name, class, section, and the date(s) of absence. Mention the reason for leave, such as illness, check-up, or hospitalization.
3. Use Clear and Professional Language: Write in a respectful and formal tone. Ensure your message is concise and avoids unnecessary details.
4. Mention Responsibility to Complete Schoolwork: Assure the school that the student will catch up on any missed assignments or tests during the absence.
5. Attach Additional Information (If Needed): If the illness is serious or requires prolonged leave, attach supporting documents like a medical certificate.
6. Provide Contact Information: Include the parent or guardian's name and contact details for any follow-up from school authorities.

Related: Student application for sick leave

Sick Leave Application for Office Samples

A suitably formatted sick leave application helps maintain professionalism and ensures clear communication with your manager or HR department. In this section, sample letters and emails are tailored for different office leave scenarios, including one-day and fever-related leave requests.

Sample 1: One-Day Sick Leave Application for Office

Subject: Request for One-Day Sick Leave

Dear [Manager's Name],

I’m not feeling well today—I have a mild fever and feel pretty weak—so I wanted to request a one day off on [insert date] to rest and recover.

I’ve made sure there’s nothing urgent left unfinished, but if anything important comes up, you can reach me at [contact details]. I’ll be back tomorrow and will catch up on anything I missed.

Thanks for understanding! Let me know if you need any more details.

Kind regards,

Casual Leave Application: The Secret to a Guilt-Free Day Off

Sample 2: Sick Leave Application Due to Fever

Subject: Sick Leave Request Due to Fever

Dear [Manager's Name],

I hope you’re doing well. Unfortunately, I’ve been feeling unwell since [insert date], with a high fever and severe fatigue. My doctor has advised me to take a few days off to rest and recover properly, so I’d like to formally request sick leave from [start date] to [end date].

I’ve attached my medical certificate as per company policy. While I won’t be able to handle my usual tasks during this time, I’ll be available for any urgent matters if needed—you can reach me at [contact details]. 

If all goes as expected, I should be back at work on [expected return date].
I really appreciate your understanding and support. Please let me know if you need any additional information.

Sincerely,

Also read our comprehensive blog with formats on how to apply for leave application from office

Sample 3: Email Sick Leave Request for Manager

Subject: Sick Leave Request

Dear [Manager's Name],

I just wanted to let you know that I’m feeling under the weather today—I've been dealing with nausea and headaches since this morning, and it’s making it challenging to focus on work. I want to request sick leave for [insert date(s)] so I can take the time to rest and recover.

To make sure everything stays on track, I’ve handed off my current tasks to [team member’s name]. If anything urgent comes up, I’ll do my best to check emails when I can. I’m hoping to be back in the office feeling better by [insert expected date].
Thanks for understanding—I really appreciate it. Let me know if you need anything else from me.

Best regards,

11 Maternity Leave Application Formats to Make the Process Easier!

Sample 4: Health Issue Sick Leave Application for Office

Subject: Leave Application Due to Health Issue

Dear [Manager's Name],

I hope this message finds you well. I am writing to formally request sick leave from [start date] to [end date] due to a health issue. Over the past few days, I have been experiencing [describe condition, e.g., severe migraines and dizziness], which has significantly affected my ability to concentrate and work efficiently.

Per our office guidelines, I am providing this application to ensure compliance with leave policies. I have consulted with my doctor and will follow a treatment plan to recover fully. I expect to return to work on [expected return date], and I amready to resume my responsibilities. I have also informed [team member’s name] about ongoing tasks that require monitoring during my absence.

Please let me know if you need any further details or medical documents. I appreciate your support and understanding regarding this health issue leave request.

Thank you,

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Sample 5: Sick Leave Application for Office: Medical Treatment Example

Subject: Leave Application for Medical Treatment

Dear [Manager's Name],

I hope you are doing well. I am writing to request sick leave for medical treatment. I have been diagnosed with [condition, e.g., a recurring health issue] that requires immediate attention and a scheduled procedure on [insert date]. Based on my doctor's recommendation, I will need time for both treatment and recovery, which I anticipate will take from [start date] to [end date].

I know it’s important to keep things running smoothly, so I’ve already asked [team member’s name] to handle any urgent stuff while I’m away. You can still reach me by email or phone if anything significant comes up. Also, I can provide a doctor’s note or any other medical documents per the rules.

I plan to return on [expected return date] and catch up on any missed work as soon as I return. Thanks a lot for your support and understanding! Let me know if you need any more details.

Kind regards,

No need to stress for fever, read and download for more than 10 formats on leave application for fever 

Sample 6: Family Health Emergency Leave Application for Office

Subject: Leave Application for Family Health Emergency

Dear [Manager's Name],

I am writing to inform you of an urgent family health issue that requires my immediate attention. My [family member's relation, e.g., mother, father, spouse] has been hospitalized due to a critical medical condition, and I need to be with them during this difficult time. Therefore, I kindly request leave from [start date] to [end date] to provide necessary support and handle medical procedures.

I have informed [team member’s name] about ongoing tasks and deadlines to ensure minimal disruption during my absence. If needed, I am available for any urgent queries via [email or phone]. I plan to return on [insert expected date], but I will keep you updated if the situation requires an extended leave.

I sincerely appreciate your understanding and support regarding this leave application for family member illness. Please let me know if additional details or documentation is required.

Thank you,

Sick Leave Application for School Samples

A suitably formatted sick leave application for school helps maintain professionalism and ensures clear communication between students, parents, and school authorities. Submitting a well-structured letter or email reduces misunderstandings and ensures that leave is approved without delay. Below are sample sick leave applications for various scenarios.

Sample 1 : Application for Sick Leave in School Due to Fever

To, The Principal

[School Name]

[School Address]

Subject: Application for Sick Leave Due to Fever

Respected Sir/Madam,

I am [Parent’s Name], the parent of [Student's Name], who is a student of [Class/Grade], section [Section Name]. I am writing to inform you that my son/daughter is currently suffering from a high fever and has been advised by the doctor to rest for [number of days]. Therefore, I kindly request sick leave from [start date] to [end date] for proper recovery.

We know how important attendance and schoolwork are. I assure you that [Student's Name] will finish any missed homework and assignments after returning to school. Please approve this fever leave request and excuse the absence during this time.

We really appreciate your support and understanding.

Thank you.

Need a one-day leave for school? Find simple and professional leave application formats to request a day off easily

Sample 2: Medical Leave Application Format for Students

To,

The Principal

[School Name] [School Address]

Subject: Application for Medical Leave

Respected Sir/Madam,

I am [Parent’s Name], the parent of [Student's Name], a student of [Class/Grade], section [Section Name]. I am writing to inform you that my son/daughter is undergoing medical treatment for [briefly explain condition, e.g., a minor surgery or illness]. The doctor has recommended rest and further treatment, which requires an absence from school for [number of days]. Therefore, I kindly request medical leave from [start date] to [end date].

We understand the importance of regular attendance and assure you that [Student’s Name] will make up for any missed academic work upon their return. Attached to this letter is the medical certificate from our healthcare provider for your reference.

I kindly request that you grant this application for school medical leave and excuse [Student's Name] during the period of absence. Your support is greatly appreciated.

Thank you.

Sincerely,

Also read our blog on how to apply to principal for sick leave for your child with 8+ formats

Sample 3: Sick Leave Application Sample for School (Contagious Illness)

To,

The Principal

[School Name] [School Address]

Subject: Application for Sick Leave Due to Contagious Illness

Respected Sir/Madam,

I am [Parent’s Name], the parent of [Student's Name], a student of [Class/Grade], section [Section Name]. I am writing to inform you that my son/daughter has been diagnosed with [name of contagious illness, e.g., chickenpox]. The doctor has advised rest and isolation to prevent the spread of the illness. Therefore, I kindly request sick leave from [start date] to [end date].

Given the nature of the illness, we want to ensure the safety of other students and staff members. I assure you that [Student's Name] will resume school only after fully recovering and obtaining medical clearance from our doctor.

We request that this leave application for illness be approved and the absence be officially excused. Thank you for your cooperation and understanding.

Sincerely,

Also read how to write a resignation letter

Sample 4: Emergency Family Health Issue Leave Application for School

To,

The Principal

[School Name] [School Address]

Subject: Application for Leave Due to Family Health Emergency

Respected Sir/Madam,

I am [Parent’s Name], the parent of [Student's Name], a student of [Class/Grade], section [Section Name]. I am writing to inform you about an urgent family health issue. [Briefly explain the situation, e.g., "A close family member has been hospitalized, and our presence is required."] Due to this unforeseen emergency, we kindly request leave for [Student's Name] from [start date] to [end date].

We understand the importance of regular attendance and assure you that [Student's Name] will catch up on missed lessons and assignments. Your cooperation during this time is greatly appreciated.

Please consider this family health issue leave application and grant the necessary leave for [Student's Name].

Thank you. Sincerely,

Sample 5: Sick Leave Application for School Check-up

To,

The Principal

[School Name] [School Address]

Subject: Application for Leave for Medical Check-up

Respected Sir/Madam,

I am [Parent’s Name], the parent of [Student's Name], a student of [Class/Grade], section [Section Name]. I am writing to inform you that [Student's Name] needs to undergo a scheduled medical check-up at [Hospital/Clinic Name] on [date].

We kindly request a leave of absence for [Student's Name] for [duration, e.g., one day] to attend the hospital check-up. The doctor said this check-up is essential for monitoring [mention medical condition if needed]. We will ensure that [Student's Name] catches up on all missed schoolwork.

Please approve this leave request for a medical check-up and excuse [Student's Name]’s absence. We truly appreciate your understanding and support.

Thank you.

Sick Leave Application Templates – Free Downloads

Make your leave application process simpler and quicker with these free, customizable templates. Whether you’re writing a formal sick leave application for your office or a school absence request, these ready-to-use templates can help you communicate effectively and comply with protocols.

One-Day Sick Leave Application Templates

Use these templates for short-term sick leave when you need just one day off.

1. One-Day Sick Leave for Fever
2. One-Day Sick Leave Email Template
3. Leave Application for Minor Illness

You can download the document using the link below:

Download One-Day Sick Leave Template

Sick Leave Application for Office Templates

Professionally structured leave templates suitable for corporate or office environments.

1. Formal Sick Leave Application for Work
2. Sick Leave Email Template to Manager
3. One-Day Sick Leave Application for Corporate Employees
4. Medical Leave Application for Office Tasks

You can download the templates and document using the link below:

Download Sick leave application for office templates

Sick Leave Application for School Templates

These templates are designed to help students and parents submit formal leave requests that comply with school policies. They ensure clear communication of necessary details such as absence duration, illness type, and recovery plan. The following templates can be downloaded.

1. Sick Leave Application for Students
2. Application for Sick Leave from Parents to Principal
3. Leave Application for Illness During Exam Period
4. Medical Leave Application for Extended Absence

Download Sick Leave Application for School templates

Sick Leave Application with Medical Certificate Templates

When an extended absence is necessary due to serious illness, schools and offices often require a formal sick leave application accompanied by a medical certificate. These templates help ensure compliance with such policies while maintaining professionalism.

1. Sick Leave Application for Hospitalization
2. Medical Leave with Doctor's Note Submission
3. Extended Sick Leave Request for Medical Recovery
4. Health Certificate-Based Leave Application

Download Sick Leave Application with Medical Certificate Templates

The Importance of Sick Leave for a Healthy Workplace

Sick leave is crucial for maintaining a healthy and productive workplace. Effective sick leave policies benefit both employees and employers, highlighting the importance of prompt action and teamwork, especially in handling medical emergencies.

Quick Action Helps

Responding quickly to sick leave requests, especially within the first two weeks, helps employees recover and return to work faster. (Vargas-Prada et al., 2016).

Teamwork Works Best

Collaboration between managers, health professionals, and coworkers during sick leave improves outcomes and reduces long-term absences.  (Carroll et al., 2010).

Stick to the Sick Leave Rules

Sticking to sick leave policies, especially during flu season, is crucial for preventing illness spread and ensuring smooth operations (Edwards et al., 2016).

Wellness Programs: More Than Just Health

While wellness programs enhance well-being, they should be part of a broader health strategy as they don’t always reduce sick leave (Proper et al., 2004).

Summing up

Crafting a well-structured application for sick leave ensures that your absence is appropriately recorded and reflects your professionalism. By following the tips outlined in this guide, you can submit a leave request that is clear, concise, and compliant with your company’s policies.

 

Remember to include all necessary details, avoid common mistakes, and provide supporting documentation when required. This approach will help you secure your sick leave and maintain good relations with your employer.

Read our blogs for other formats of leave applications

Links to download samples

• Leave application due to fever
• Leave application for maternity
• Leave application for office
• Leave application for marriage
• Half day leave application