Job satisfaction and employee performance are effective instruments that support the ongoing development and enhancement of organizational performance in order to meet goals. Since happy workers are more productive, employers stand to gain a great deal from this. A happy workforce will foster a positive work environment that will improve productivity. As a result, research studies on job satisfaction have grown increasingly common. The specific problem addressed in this study is to examine the impact of job satisfaction on employee performance. It considered which (intrinsic and extrinsic) rewards determine job satisfaction of an employee. Data were collected through a field survey using a questionnaire from 141 employees from Usain Gishu county hospital health care staff. The analysis data revealed that there exists positive correlation between job satisfaction and performance of employees. This research could help the industry better understand how employee performance affects it and become more proactive by putting in place methodical measures to ensure that staff members are engaged, well-suited, and feel like they are part of the industry.