In customer service, it’s not unusual for customers, patients or clients to show their thankfulness through small tokens of their appreciation—usually a thank you note or a small basket of yummy treats, maybe even an edible arrangement if you did a super fantastic job. But is someone’s appreciation crossing the line from being thankful to being inappropriate when a gift is expensive? What if the gift is lots of cash? And what if there is something in it for the person being thankful? A colleague recently shared the following story.