Elective waiting lists convert scarcity into temporal order, but the moral meaning of that order is often left implicit. This article asks when an earlier place in a queue should continue to control priority once patients differ in deterioration risk, cumulative disadvantage, and the burdens generated by delay. Using allocation ethics and a non-compensatory threshold approach, it treats elapsed waiting as a morally relevant but rebuttable procedural claim rather than as an intrinsically decisive entitlement. The analysis distinguishes administrative waiting time from morally relevant waiting, separates urgency from deterioration trajectory, and examines how social disadvantage can matter without becoming a mechanical priority bonus. The central contribution is a conditional allocation rule: fair queue position retains presumptive force while competing claims remain materially comparable, but additional waiting cannot always compensate for sufficiently serious, clinically and ethically relevant deterioration or cumulative disadvantage. Reordering is justified only when the reasons for departure are relevant, consistently applicable, evidence-responsive, and open to review. This approach protects the fairness value of orderly queues while preventing procedural sequence from obscuring unequal harm accumulated during delay. It also avoids converting complex claims into a single additive score or invented numerical threshold.
