In a subset of the Federal Capital Authority (FCDA) Civil Service, the study aims to examine the relationship between job satisfaction, retention, and employee salary. Civil Service, Capital Authority (FCDA) are established by the manner in which employees receive compensation and rewards. Two goals were employed, and two hypotheses were developed to direct the investigation. The research design utilized in the study was a descriptive survey. The 400 Federal Capital Authority (FCDA) Civil Service members were chosen as the population. The study's findings indicate that employee retention significantly affects the Federal Capital Authority (FCDA) Civil Service [F (1, 398) = 11.287; p<0.01] and that job satisfaction and employee compensation are significantly correlated among the FCDA Civil Service [r (398) = -.123: p<0.01]. It was determined that, similar to other nations, the Federal Capital Authority (FCDA) Civil Service in Nigeria acts as the pivot for economic growth; managers of the FCDA Civil Service face several difficulties. They struggle with a high employee turnover rate and discover that their staff members are quitting them without warning on a daily basis. According to the report, the Federal Capital Authority (FCDA) Civil Service management should pay its personnel appropriately for the position they have so that they can carry out their leadership duties successfully and efficiently. All of these suggestions will improve employee performance, which will improve the performance of the organization as a whole. The Federal Capital Authority (FCDA) Civil Service should promote more employee relationships and interpersonal interactions.