I don't think that's necessarily a good assumption. I work in IT, and am on a rotating on-call schedule for resolving reported problems with the network. In my experience it's not at all uncommon to have a problem reported on holidays and weekends by an executive who's working, either remotely from home or on-site.
Roger That. And, I'd add that one of my former jobs (also in IT) more-or-less required work on T-giving, Christmas, and other holidays. Most of the rank-and-file (the peons?) aren't working at those times. We used the downtime to do maintenance on the major systems so that they'd be back up when "The Peons" came back to work.
It stunk, but it also came with the territory. Quiet, though. Just a double-handful of IT guys, and usually a handful of execs.