Tipping is a really hot-button issue, actually. May want to avoid that.
Tipping is a hot issue? Eh, world we live in is strange.
Waiters/waitresses tend to be consistently paid below minimum wage, which is allowed because of the practice of tipping. It's a shitty job to begin with, and you're relying on the generosity of the customers to earn enough to pay rent, bills, tuition, etc. (if you don't work for a place that automatically adds a gratuity to the bill, that is, which is becoming increasingly common in no small part because of the jackasses that leave $1 tips). I always try to tip 15% unless the service was exceptionally terrible, even when it's a stretch on my wallet. It's a really shitty thing to undertip someone who did a decent job. And, frankly, if you can afford to eat out, you can afford to leave a tip.
Wait, is underpay allowed because of tipping or tipping allowed because of underpay?