Any adequate account of the distinction between consequentialist and deontological moral systems must take account of the central place given to constraints in the latter. Constraints place limits on what each of us may do in the pursuit of any goal, including the maximisation of the good. There is some debate, however, both over how constraints are to be characterised, and over the rationale for their inclusion in a moral system. Some authors view constraints as agent-relative: a constraint supplies an (...) agent with an agent-relative reason to refrain from acting in the prohibited manner. A reason is agent-relative if it contains an ineliminable back-reference to the agent. On this characterisation, it is natural to suppose that constraints arise because of an agent’s concern with her own agency. There is perhaps, however, an alternative to this agent-focussed rationale: constraints, although characterised in terms of agent-relative reasons, might be best explained and defended via considerations of the potential victim of wrongdoing—yielding a victim- or patient-focussed rationale. Or, perhaps, constraints are not only best defended by a victim-focussed rationale; they are also best characterised by reference to the potential victim. In what follows, we advocate an agent-relative characterisation of, and an agent-focussed rationale for, constraints. We begin by developing a rigorous account of agent-focussed agent-relativity, before turning to consider patient-based approaches. (shrink)