Capacity building focuses on the form of process consultation, organizational communication, leadership development, promotion of networking and collaboration, action learning, advocacy and awareness creation, on the job training technical advice, training course, and educational and continued professional development to enhance different organizational abilities for implementing strategic programs. This study aimed at establishing the relationship between career development on employee productivity in Uganda Broadcasting Corporation. The study adopted both descriptive and cross-sectional survey research designs with both qualitative and quantitative methods of data collection and was carried out at Uganda Broadcasting Corporation. The study population was 256 out of which a sample of 168 respondents was selected as study sample and it was randomly and purposively selected. Questionnaires and interviews were used as data collection methods. The content validity index was 0.73 while the reliability value was 0.71. The results of the study revealed a strong positive and significant correlation between career development and employee productivity (r= 0.747, p=0.000) in Uganda Broadcasting Corporation (UBC). In conclusion, the findings of the study indicated that, career development is an influential factor of employee productivity at Uganda Broadcasting Corporation. It was recommended that; Management of Uganda Broadcasting Corporation should organize training and seminars for the employees to increase employee skills.