The scarcity of resources, instability of staff, high turnover of skills (15%), retention of health professionals are all factors that affect the performance of the public service in hospitals in the Laâyoune region. In this context, this study has reflected on the influence of public service motivation on work performance. To examine this relationship, the study identified the determinants of the Motivation for public service (MPS) as well as its correlation with human resources (HR) performance in the public sector in Laâyoune regional hospital. Objective: This study aims to measure public service motivation in Regional Hospital Center of Laayoun (CHRL). Methods: Based on a mixed correlational descriptive study, using a questionnaire, two measuring instruments, and interviews. The data collected by the quantitative tools were analyzed by SPSS17.0 software. For exploratory factor analyzes and EQS6 .1 for confirmatory factor analyses. Results: They reveal that there is no correlation between MPS and performance. However, there is a significant correlation between the MPS and a performance dimension (organizational confidence) among physicians of r = .46 (p <.05). Also, there was a significant correlation between MPS and the performance (job satisfaction) dimension of r = .26 (p <0.05) among nurses. As for the administrators, the results show that there is a significant correlation between the MSP and the performance component (the organizational climate) of r = .57 (p <.05). Conclusion: the correlation between public service motivation and work performance among healthcare professionals in hospitals is a reality in Laayoune. Determining the correlation between public service motivation and work performance at the national level is recommendable for improving the effectiveness of health professionals.