Working life in public sector professions is undergoing significant change and becoming increasingly demanding. This paper explores work intensity in NHS ambulance services in England, describing four distinct but interrelated dimensions of intensity: temporal, physical, emotional, and organizational. We use the concept of edgework to explore the complexities involved in how emergency workers attempt to negotiate the rewards and risks associated with multidimensional work intensity. Although certain parts of ambulance work may be intrinsically intense and can provide an important source of validation, organizational elements have the potential to push work intensity to unnecessary extremes. Ambulance services are ‘professionalizing’, but as work in ambulance trusts continues to intensify, issues over dignity, staff retention, and the meaning of work are becoming ever more challenging, just as they are in other public service professions.