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To: Mr./Ms. [Supervisor's Last Name], [Department Name]
From: [Your Full Name]
Date: [Current Date]
Subject: Sick Leave Application
Dear Mr./Ms. [Supervisor's Last Name],
I am writing to inform you that I am unwell and unable to come to work today, [Date of Absence]. I have developed a fever and a severe headache and need to rest and recover.
I have attached a copy of my medical certificate for your reference. I expect to resume my duties by [Expected Return Date, e.g., tomorrow, the next working day]. For any urgent matters, please feel free to contact me by email.
I apologize for any inconvenience my absence may cause and thank you for your understanding.
Sincerely,
[Your Full Name]