What’s more important: Your employee or your customer? A popular business expression is, “The customer is always right.” But you should never say “always.”

The owners of a restaurant in Alaska won international praise after defending their autistic employee. Autism is a disorder that makes relationships and talking to others difficult. When the employee delivered the wrong food to a customer’s house, that customer reacted severely and unkindly. Even after the employee corrected the mistake, the customer continued to yell. And that same customer cursed and used “foul language” with the restaurant owners’ daughter.

So the owners “fired” the customer. Restaurant owners P.J. and Spiro Gialopsos have added the customer to the restaurant’s “Do Not Deliver” list. That customer is now persona non grata, Latin for “an unwelcomed person.”

P.J. Gialopsos wrote on the restaurant’s Facebook page, “you would think in the year 2015 the majority of the population would have learned or at least heard about autism.”