Wambua (2011) concludes that employee involvement affected the financial performance of the cooperatives. Develtere and Pollet (2004), conclude that in successful cooperatives, professional issues play a crucial role in harnessing the different associative and business forces at play in a cooperative. It is often inferred that agency problems are more prevalent, disturbing and acute in cooperatives than in other (non-investor owned) businesses. Therefore this study aims to assess the effect of professionalism on the net sale performance of cooperative unions. Research sample were 228 respondents of sampled from nine cooperative unions in oromia regional state, Ethiopia. Both primary and secondary data were collected and analysed using multiple regression model through SPSS. The result of the research concluded that there are significant influences of managers’ professional efficiency variables on the net sale and there are also differences in the influence among the managers’ professional related independent variables on the net sale of the selected cooperative union.
Keywords: Cooperatives, efficiency and performance, net sale, professionalism