Dear Mr. Parker,
I would like to apologize for my absence yesterday (November 28, 20xx) since I had to urgently go home to our province. We had a family emergency, and I wasn't able to call you immediately.
I am willing to render the hours lost during my absence as to make up for its effect on our production. Rest assured that you will be immediately notified if such circumstances happen again in the future.
Sincerely,
Karen Turner
