The latest supervisor was a devout catholic with literally 12 children, and he found out that the time off I'd taken was to get a vasectomy.
I could have pushed the issue and very likely could have kept my job but... we kept getting fewer contracts, there was drama between C-level people, and Mr. Catholic was the 3rd boss in 8 months. I had a new job two days later, working for a place that isn't so obviously circling the drain.