Abstract
This paper addresses an alleged paradox regarding gratitude—that a duty of gratitude is odd or puzzling if not paradoxical. The gist of our position is that in prototypical cases, gratitude expression falls under a distinctive deontic category we call morally expected—which has a corresponding contrary deontic category we call morally offensive. These categories, we maintain, need recognition in normative ethics to make proper sense of the moral status of gratitude expression and other morally charged restrictions on action, and likewise to make proper sense of the moral status of failures to abide by such restrictions. We argue for our view largely on phenomenological grounds.