Crises are uncertain and disorderly situations, which temporarily destabilize power relations and impede centralized control over operational crisis responders (e.g., firefighters, police officers, paramedics). Consequently, responders wield considerable autonomy and have room to act on their own initiative. They make crucial decisions in frontline crisis operations based on their situational understanding and professional expertise. As such, they are similar to other “frontline workers” (or street-level bureaucrats) in government service. Their important work has attracted increasing attention in crisis management literature, in which three tensions have emerged. The first tension revolves around the nature and extent of frontline discretion. In some studies, these frontline responders are presented as implementers who are considerably constrained by extensive rules, planned routines, and detailed protocols. Other studies, instead, emphasize the independent and proactive behaviors of frontline workers who use their discretionary space to shape crisis response efforts. The second tension centers on the reasons for discretionary actions. Typically, crisis scholars analyze social and rule-based pressures on frontline workers to explain their discretionary actions as they implement public policy. Critics, instead, build on responders’ own stories to grasp their meaning-making attempts and use this as a basis for understanding why and how responders enact their discretionary practices. The final tension concerns the advantages and disadvantages of frontline worker discretion. There is a widespread belief that frontline discretion in crisis response enables much-needed improvisation, creativity, and flexibility, but increased discretion may also raise legitimacy questions and potentially burden frontline workers with complex ethical dilemmas. To move the understanding of frontline workers in crisis management forward, further research is required in several areas. Empirically, frontline workers are increasingly working in transboundary crisis networks, so that more research is necessary to understand how such crisis networks affect frontline discretion. Theoretically, literature on frontline work in crisis management has remained by and large isolated from other micro-level theories on crisis management, even though there are opportunities for fruitful cross-fertilization with adjacent literatures.