YSK: If you find lost money at a place of business, check with the manager about what the store's policy is on lost and found money. Because you may not receive the money back after nobody claims it.

I work for a delivery company and went to a well-known pharmaceutical company's store and saw $20 in the ATM. I decided to do the right thing and hand it to the manager I get signatures from. While this made me feel good, the return visit two weeks later did not. When I asked if anyone had come to claim the $20 bill, the store manager (different manager) said no, and that head office said not to give me the $20 back. Which prompted me to say "so I should've just kept it then?" To which she replied "yeah."