Excuse Letter For Going Home Early From Work

Dated [date]
[Name of Authority Person]
[Designation]
[Name of Company]
[City/ State/ Country]

Dear Madam/ Sir,
I want to excuse that I have to leave office one hour earlier than our working time today, [insert date]. I had previously informed you that my [relation] was not doing well. Now we have to take him/ her for an emergency surgical procedure.
I hope you will grant me leave. I will try my best to handle the remaining tasks tomorrow, provided that everything remains fine.

Thanks,
Yours Sincerely,
[Name]