A Dissertation Submitted on the School of Public Administration and Management in Partial Fulfillment of the Requirement for the Award of the Degree of Master of Public Administration (MPA) of Mzumbe University, Morogoro-Tanzania 2013The National Social Security Fund (NSSF) in Mwanza city has embarked on Knowledge and skills programme to strengthening competitive advantage and workers ability to perform caused by the existing employment challenges. The objective of the study is to examine the contribution of knowledge and proficiency skills of NSSF workers in Mwanza city. Research questions aimed to find out variation of contribution of workers knowledge and skills to the prevailing situation and the customer’s views towards the day to day performance of the NSSF workers. The sample comprised of 74 respondents both customers and workers from twelve departments who had passed school (University, colleges) or had certain work ability and experience that contributed to the existence of the organization. The issues of readiness, responsibility and effectiveness were also addressed by ensuring that at least 99% of the entire questionnaires were filled and returned on time. Questionnaires based survey, Interviews and observation were used in data collection The findings indicated that creativity, innovation and learning culture influenced positive change in the organization by having important skills fit in the 21st century and add value to employees professional work performance, master the work, satisfy the customers needs and meet various challenges emanating from within and outside, while people, workers with inadequate knowledge and skills had nothing to contribute. The study was confined to the period of five years i.e from 2008 to 2013. Finally, the study projected the need to provide workers with appropriate knowledge and proficiency skills as the driver of productivity and economic growth