I'm going to assume "The store manager and the night staff do not speak a word of English " means that they typically speak foreign languages at work. (not that they can't speak English at all, which would be ridiculous). So assuming this is a serious question.
I've sort of had this happen, back in the 90s, this was when I was a young lad and the WG became sort of my gf & we used to go out together. (My first gf btw, really helped my confidence with women, resulting in a few proper civvy gfs later on. I'm sure it's good advise that dating a WG is extra risky, but maybe that extra risk is worth it if you haven't had a gf before. Especially if you're aware of the fact she might just want to scam you. )
Anyhow, I knew some of the other guys at work had sex there (though not AFAIK with WGs), so wanted some of that action for myself. Work was a large corporate office. As it was only a little out of our way while I was driving her home after a night out, I thought why not. Bent her over my desk, it didn't do that much extra for me, but she was really buzzing afterwards. So a few weeks later we did it again. This time took her to a meeting room where the desks were much posher. In that location there was a tiny but real risk a patrolling security guard might catch us, which added a little extra excitement. It didn't happen, but we did meet a security guard on the stairs. I still remember today the impressed look he gave me. (she obviously wasn't dressed for work, and was much better look than myself.)
Not quite true punts as I didn't pay her on those occasions, but close enough I hope.
In the more general case, I'd not expect most WGs to visit a work place for an outcall, unless she already knows you well. While you have good logic to see the risk as being on you, the WG won't see it that way. They tend to see anything unusual as extra risky for them. I've had enough trouble convincing a new WG to visit me at a 2 star hotel (they are much happier coming to posher business hotels where they have individual phones in each room.)