Public service motivation (PSM) are motivational factors that are unique in professions that serve the public. This study examined PSM’s relationship to self-reported job satisfaction and job performance in a unique sample of emergency medical services professionals, in which little research on the PSM construct has been undertaken. The PSM factors that emerged in this study did not mirror the traditional four-factor structure. The public interest and self-sacrifice factors formed a single public service factor, and a small number of compassion factors loaded on a second factor, with the policy-making factor being fully replicated. All three factors were significantly related to job satisfaction, and none were related to job performance, while controlling for the influence of demographic and contextual factors. All of these contextual factors were significantly related to job performance, except for the length of time in the emergency medical services (EMS) field, but not job satisfaction.

公共服务动机（PSM）是在为公众服务的行业中独特的动机因素。这项研究在紧急医疗服务专业人员的独特样本中研究了PSM与自我报告的工作满意度和工作绩效之间的关系，在该样本中，关于PSM结构的研究很少。这项研究中出现的PSM因素并未反映传统的四因素结构。公共利益和自我牺牲因素构成了一个公共服务因素，而少数同情因素则是第二因素，而决策因素则被完全复制。在控制人口和环境因素的影响的同时，所有三个因素均与工作满意度显着相关，而与工作绩效无关。