Under normal circumstances, if you see the manager give a 50% discount to outsiders, it is illegal.

Generally speaking, employees who go to work on the same day can enjoy a 50% discount on meals on the way (not counting after work).

In other cases, all personnel will get a 7.5% discount.

On McDonald's POS machine (cash register), when ordering food, two buttons will appear in the checkout interface: 50% discount and 7.5% discount. When you click on any one of them, the system will prompt: Please swipe the manager card to confirm. At this time, the discount price can be displayed, otherwise the POS will enter the account at the original price (which is very troublesome and will also lead to cashier errors).

And when returning a meal (McDonald's can return a meal), when a single transaction is too big, you need to confirm it with a card (to prevent misoperation)