Hi hun, I just told my employer that I was having an op and would require a couple of weeks off, didn’t tell them what the op was for and they didn’t ask xx
Check your company policy but usually a voluntary op won’t be covered under sick leave so they might put you down as unpaid leave if you don’t book holiday xx
At my company voluntary ops aren’t covered under sickness leave so I took mine as AL, but had the option to take it unpaid 🙂 But check with your HR department!