They aren't exactly hiring many people these days. My dad's going to retire soon (really, it should have been now, but he keeps working because he likes work I think...my mom keeps pushing him to leave :P), and they don't really have anyone set up to replace him.
If he ever DOES retire, they'll lose a strong asset. He works for them all the damn time, probably, I'd guess, at least 70 hours/week. I think they take him rather for granted.