[Recipient Name]
[Recipient Title]
[Company Name]
[Company Address]
[City, State, Zip Code]

Dear [Recipient Name],

I am writing to inform you that I was unable to attend work on [specific date(s)] due to [briefly state the professional reason, such as a medical appointment, urgent family matter, etc.]. I understand the importance of my role and apologize for any inconvenience my absence may have caused.

I have already taken steps to ensure that my tasks are on track and am prepared to catch up on any work that was delayed. Please let me know if there are any specific areas where you need my immediate attention.

Thank you for your understanding.

Sincerely,
[Your Name]