there wouldn't be a janitor in the trekverse. toilets/puke/dirty clothing/dirty plates/left overs etc would all be treated the same way - converted to energy in the replicator and that's it.
ok, i don't mean picard would take a shit on his replicator and then order an earl grey tea but the toilet wouldn 't have sewage pipes, the waste would just sit in there and dematerialise straight away - probably the smell too

(they showed the dirty uniform aspect of this in one ep but can't remember it - was replaced witha clean fresh one instantly).
most menial jobs wouldn't exist, if not none.
in DS9 there was a kind of a payment system. or at least a limit on credits. sisko on entering starfleet used his transporter credits to beam home everyday cos he was homesick. maybe that's how it works. ration things to entice you to earn more through work