Associative duties are agent-centered duties to give defeasible moral priority to our special ties. Our strongest associative duties are to close friends and family. According to reductionists, our associative duties are just special duties — i.e., duties arising from what I have done to others, or what others have done to me. These include duties to (a) abide by promises and contracts, (b) compensate our benefactors in ways expressing gratitude, and (c) aid those whom we have made especially vulnerable to our conduct. I argue, though, that reductionism faces a problem: special duties are not strong enough to account for the strength of our associative duties. At the bar of associative duties, we are required to do what no special duty can ...