In this task, you're given a context passage, followed by a question that needs to be answered. Based on the paragraph, you must write unambiguous answers to the questions and your answer must refer to a specific phrase from the paragraph. If multiple answers seem to exist, write the answer that is the most plausible.

It should be interesting . Niels was supposed to come to Metro , but I don't think he did unless he had come and gone by the time I got there . I didn't work today , but left my car there and walked to campus . If he didn't come today than maybe he'll be there tomorrow or Friday .
Question: What's a possible reason the writer didn't work today ?
Because they aren't scheduled to work .