This paper examines the effect of workplace supervision on employee performance in non-governmental organizations (NGOs) in Uganda, the, a case of RAYDNET. The objectives of the study were; to examine the effects of supervisor support on employee performance, to determine the influence of performance coaching on employee performance and to examine the relationship between supervisor feedback and employee performance at RAYDNET, Rubaga Division. The study conducted a comprehensive literature review in which the works of principle authors (Decker et al, 2001, Russomagno, 2000, Scontrino Powell, 2021, Armstrong, 2006; Pollit, 2003, Sreesha and Joseph, 2013; Anja et al., 2010). The study adopted both descriptive and correlational research designs, self-administered questionnaires were used to collect data from a sample of 63 participants. The data was analyzed using correlational and regression analyses with support of the statistical package for social scientists (SPSS) software. Study results indicated a very strong positive association between supervisor support and employee performance. The p-value of 0.000 (which is less than 0.01). very strong positive relationship between coaching and employee performance. This meant that as coaching improved, employee performance also improved, and vice versa. The p-value of 0.000 (which was less than 0.01) suggested that the relationship was statistically significant at the 0.01 level and there was a very strong positive association between supervisor feedback and employee performance. This meant that as supervisor feedback improved, employee performance improved in the same measure, and vice versa. The p-value of 0.000 (which was less than 0.01) suggested that the association was statistically significant at the 0.01 level. The study concluded that there was a profound impact of supervisor support on employee performance at Rubaga Youth Development Network. The data revealed that supervisor feedback was a critical factor in motivating employees, enhancing their engagement, and improving their performance thus a need for formal systems and structures to ensure consistency and accountability in supervisor support, ultimately supervisor support is a vital determinant of employee performance.