answer: Mark has been working overtime. #Person1# asks if he thinks it's worth it. Mark thinks so because he will be paid time and a half.
documents: #Person1#: Mark, you've been coming home late these days. What are you busy doing?
  #Person2#: Nothing important. I've been working overtime lately.
  #Person1#: How many hours do you work each day now?
  #Person2#: 12 hours, including 5 hours overtime.
  #Person1#: That's tough indeed! Do you think your health can afford?
  #Person2#: I don't care. I need money.
  #Person1#: Surely you'll be paid extra for overtime, but do you think it's really worth?
  #Person2#: Yes, I think so. When I work overtime I'm paid time and a half.
  #Person1#: Oh, yes. Money comes faster in that way than otherwise.
  #Person2#: But jobs with a lot of overtime are quite limited. Employers usually don't like to pay for overtime if they can manage.
  #Person1#: That's true.