I have always shown empathy for students when it comes to unexpected mishaps in life. One way I prepare myself is to explain to the students, at the beginning of the term, is that once in a while in their studies (as a student) life can get in the way. Sometimes these events are positive but more often it can be negative. As adult learners, they need to be prepared for these events and not to fall behind before something unexpected can happen. I want the students to be upfront if they think they will need more time, I will give it to them as long as they tell me before the due date. I tell them to hand in what they have and I will give them extra time to resubmit for a better grade as long as it is reasonable. I definitely do not want this as a recurring problem but I want to know they have been working on the assignment and not just waiting till the last minute. I want everyone that I teach to be successful and I would rather have quality work that is a day or two late than crappy weak work on time.