During the pandemic, we were asked to offer tips to more and more people, and now it may be expanding -- to store cashiers. The state of Colorado is set to enact a law that would encourage tipping at big-box stores like Wal-Mart as well as neighborhood joints. The move is intended to help those earning minimum wage, which is $13.65 an hour in the state. Right now, stores can reprimand, or even fire, employees who accept gratuities from customers.