When I was in grad school I knew a guy who just simply didn’t teach for half the semester. No contact with students, no classes held, just didn’t show. He gave everyone a passing grade on the midterm and came back halfway through. No explanation. He was not fired. Of course, like the rest of us, he was grossly underpaid and didn’t have health insurance. I guess they get what they get if they’re gonna treat us like cogs, right?