Abstract: This research aimed to assess the employees’ appraisal on their work productivity within Aljamea-tusSaifiyah Campus, Nairobi County, Kenya. The study specifically explored the effect of performance goal setting, employee training, performance appraisal, and performance rewarding on productivity levels. Additionally, it investigated the moderating effect of organizational culture on the relationship between these practices and employee output. Grounded in goal-setting, social learning, Campbell's Performance, expectancy, and Schein's Three-Level theoretical frameworks, this study adopted a cross-sectional survey design. Yamane formula and a stratified random sampling technique was used to select a representative sample of 224 employees from a total population of 508 employees. Data was gathered using questionnaires administered via online platforms. Validity of the instruments was assessed through expert review and reliability assessed through pilot testing (using Cronbach's Alpha). Collected primary data was analysed using descriptive (frequencies, means, standard deviations) and inferential (correlation, multiple linear regression) statistics via SPSS. The inferential analysis revealed that performance management practices significantly influenced employee productivity at Aljamea-tus-Saifiyah. Performance goal setting (B = 0.214, p <0.05), performance training (B = 0.176, p <0.05), performance appraisal (B = 0.205, p <0.05), and performance rewarding (B = 0.188, p <0.05) all positively and significantly predicted productivity. Additionally, organizational culture significantly moderated these relationships, strengthening the impact of each practice on employee productivity. The study concluded that performance management practices specifically goal setting, training, appraisal, and rewarding positively influenced employee productivity, though their effectiveness varied depending on clarity, fairness, and competitiveness. Organizational culture was found to play a critical moderating role, strengthening the impact of these practices by fostering fairness, adaptability, recognition, and shared values. Overall, integrating performance management practices with a supportive culture creates a more enabling environment for enhanced employee productivity. It is recommended that Aljamea-tus-Saifiyah strengthens performance management practices by ensuring clear goal setting, continuous training, fair appraisals, and effective reward systems. Integrating these practices within a supportive organizational culture that values fairness, recognition, and adaptability will enhance employee motivation and commitment. Overall, aligning performance management with a strong culture will create an enabling environment that maximizes employee productivity and institutional effectiveness. Key Words: Employee Appraisal; Performance; Management; Work Productivity