请假条(written request for leave)，包括病假条(note for sick leave)和事假条(leave of absence)。
一般格式为：
To：某某（假条是递给谁的）

From：某某（请假人）
Date：某年某月某日（写假条的日期而不是请假的日期)
Subject：标题（写上请假字样）
参考例文
To: James Zhao, Manager

From: Kaven Han, assistant

Date: March 27th, 2006
Subject: note for sick leave

Dear Mr. James Zhao,
I would like to know if I could ask for a sick leave for one day on March 29th.
I just caught a cold, then I hope I can go to hospital that day. And I will try my best to finish my work on March 28th.
Many thanks. I'm looking forward to your kind answer.