Would there be interest in night shift jobs?

As in full time jobs with full time income? It would make sense for an astronomer to work from, say, 8pm to 4am, or for there to be a night janitor, things like that. I am thinking that this would work very nicely for players who want vampire or goth paras, and quite useful for households with infants that cannot be left alone: the adults can work different shifts so there is always someone at home without sacrificing income. I'm thinking:

Service - night clerk
Science - astronomer
Maintenance - night janitor
Healthcare - night nurse
Healthcare - ER doctor
Music - lounge performer

I would be interested in fan feedback to gauge how much demand there is.