You hear the shout from Jim next door in the Purchasing Department: “Woo hoo! Look at what our vendors at Acme Corp. just sent me!” He waves the gift over the cubicle wall. “It’s one of those remote-control dinosaurs that’s sold out everywhere. Boy, my son is going to love this!”

Not wanting to completely deflate his balloon, you ask gently: “Don’t we have a policy or something that says we can’t accept gifts from clients or vendors?”

“Yeah,” he says, “but there’s a $25 limit and I know for sure this thing sells for $24.99. I went to every ...