Do you mean in regard to the oxy? It should't cause any issues at all the day after. Not unless you've been using for a longer period daily, and at higher doses. /edit: my bad, didn't see the earlier dose. Even so, I don't think you use oxy daily do you? Unless it's daily, and has been so for 10+ days, there's no reason to worry about it.
If you mean because you feel bad from the cocaine, well then little bumps every so often sounds like a plan. Though personally if I have good cocaine, the day after I don't really have any negative after-effects. If it's not that great quality, and has certain cuts (dunno which ones exactly), it's more likely they will cause me shitty after effects. (amphetamine cuts come to mind for instance).
Alternatively a small amphet dose could also help you through the day if it's from stimulants that you feel bad, but if you choose this option, depending on the dose(s) uses and the time(s) you used them at, it's likely it'll be even worse tomorrow.. So if you absolutely need a stim and have cocaine available, I'd bump that every now & then.
But from what you took yesterday, I don't see any special reason hat you'd need to 'get through the work-day today. Unless I've missed something.
OT: 160mg methadone, 240mg oxy, 60mg amphetamines, 300mg lyrica. (My antibiotics, ibuprofen & APAP too

).