Abstract
What duties do people have in the face of noncompliance of others with their duties? The paper defends the duty to take up the slack when slack taking is necessary to assist those in dire need. This duty has been criticized by J. L. Cohen, Liam Murphy and, more recently, David Miller. The duty is defended against arguments that appeal to the structure of the duty to aid, fair shares, responsibility, counterintuitiveness, and perverse consequences. The paper considers the implications of the duty for the case of aiding refugees.