I started working in a liquor store. There is a tip jar beside the cash register that some customers donate to. After a purchase, I normally give change back from highest bills to lowest (e.g. I would give one $20 bill instead of four $5) but today a customer asked me to break his change even further so he could tip. I have been thinking of splitting the change smaller so customers can tip and I tried it with one, but he got upset and asked for bigger change (though I don't see this as a problem, I'm not technically obligated to give change in a specific way and if someone wants it done differently, all they have to do is ask). I'm thinking of small denominations e.g. giving two $1 instead of a $2 (though it upset the one customer I tried). I think they would be more likely to give tips, also because people dislike carrying small change.
Any thoughts on if this is moral or a good idea? There is also a secondary benefit as we need to count all the money at night and it's easier to do it with larger change.
EDIT: in response to Pete, the idea is someone's probably not going to tip something large, like a $5, but if it were broken down into $2 and $1, they are more likely to tip a $1.
I wouldn't do $5 bill to five $1 but may breaking $2 into two $1, and only if I had plenty of coins (which we always do).