請假條(written request for leave)是英語學習者必須掌握的常用應用文之一，它包括請病假(note for sick leave)和請事假(leave of absence)。請假條是用於向老師或上級領導等因身體狀況不好或因某事請求准假的場合。
英文請假條寫作需注意三點：
1. 英文請假條一般由四部分組成，即時間、稱呼、正文和簽名。
2. 一般而言，請假條是一種簡單的書信文體。請假條一般寫在紙上，不用信封。
3. 請假條的特點是要求開門見山、內容簡短、用詞通俗易懂。
【參考範文】
Sep.28
Dear Miss Gao,
I'm sorry I can't go to school today. I helped the farmers pick apples with my classmates on the farm yesterday. Unluckily, I fell off the ladder and hurt my leg, but I wasn't badly hurt. The doctor asked me to stay in bed and have a good rest. So I ask for leave for two days.
Yours, Wang Li
比較正式的商務型假條
首先，假條的上方還是應該按照半正式的格式寫上如下資訊： To：假條是遞給誰的 From：請假人
Date：寫假條的日期(注意不是請假的日期) Subject：寫上請假字樣(事假或病假)
其次，在您的'請假信第一段，應該開門見山但是有禮貌地提出請假。第一段要中心明確，寫清您要請假的日期。
然後，在假條的第二段，您應該簡單明瞭陳述請假的原因事由。注意敘述清楚明白，並儘可能表示對此帶來工作不便的歉意。
接著，在假條的最後一段，應寫上您希望獲得准假的句子，或者具體等候答覆的時間。
【參考範文】
To: John Smith, Supervisor
From: George Chen, Accounting Department Date: March 11, 2001
Subject: Casual Leave of Absence
John, I would like to know if I could ask for a casual leave of absence from March 23 to 27.
Yesterday I received a letter from my parents, who are both over 70, telling me that a big flood took place at my home village, causing serious damage to my house. As the only son of my parents, I should go back to assess the situation, and help them to get over these difficulties. Though I cannot stay at home for too long, I should at least make arrangements for maintenance work. I believe my relatives in the village and my neighbors will also come to help. Financially I have no difficulties.
I will call you at 1:30p.m. Or you can call me at any time.