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Explanation: 你需要一个名词，我想 early departure 应该是可以的。下面这段话是我 google search 到的，是一个人事手册中的一部分，但这个网站上不去，只好复制了我能看到的这部分。下面列出的 URL 是学校的规章制度，也有tardiness 和 early departure 的说法。
... Comprehensive definition of tardiness includes: the failure of a staff member to arrive in his or her
work area at a designated time such as the beginning of the shift, returning late from breaks or early
departure from work. There should be consistency and fairness among and within departments. ...