I noticed that this only happened to my game when I lent the girlfriend a key to the house. Eventually I let her move in but I think there was no issue here.
Anyway, my sim and the girl both have jobs and my sim was a detective and she was a businesswoman. They both leave for work at the same time. The issue is the girl, after 1 or 2 hours of work, will get a query about having to skip work, as stated in the topic. Now, the query will appear if I dont follow my active sim, and I can easily cancel the query about leaving work early. However, if I follow my main sim at the police station, she will automatically leave work early and sometimes join the police lot.
What I did was revoke the keys to the apartment (Slight relationship drain, of course), but it still persisted after one day. However, she got promoted the next day, had a change of schedule, and this issue hasnt happened again. Hope that helps, I think it's related to the keys to the aparment, yes.