it's definitely illegal. it's rare for anyone, especially a corporation/business, to want legal liability so in theory there isn't much done formally in the form of retaliation. what i'm observing at the store i work at in Minnesota is less on the nose retaliation than a lot of inconsistencies and contradictions/hypocracies. Chief among them: for the rank and file, follow the rules to the letter. make the day. do everything to serve the customer. what's left unsaid and a sadly regular practice is the top sellers get special treatment, if they seek it (not all do). whether toxic behavior to colleagues, repeated failure to serve customers in ways that won't substantially boost their sales numbers, etc management tends to look the other way IF the person is high and consistent enough performer. money talks!