How do I ethically/appropriately flirt with a casino employee?

I see lots of beautiful and funny women working in the casinos and have wanted to get to know them better outside of the casino. I’m not sure how to do so in a way that won’t make them feel uncomfortable or pressured to talk to Me because they are at work.

I’ve read that Men should never hit on a woman while they are working, but idk where else I’d run into them if it wasn’t at the casino.

Edit: the general advice I received is that even under the best scenarios, it’s not really a good idea/appropriate. Thanks to all the (humane) comments for helping out, I’ll just stick to playing poker :)