The main purpose of the study was to investigate the impact of Employee turnover onrnsustainable development activities in Bole Sub City, Addis Ababa. It focused on challengesrnand prospects of the employees services for sustainable development activities with the aim tornsuggest alternative solutions to the identified problems. The research methodology employedrnin this study was descriptive survey. Accordingly, survey questionnaire was prepared, pilotrntested and administered to a sample of 118 respondents composed of 103 current employees’rnrespondents and 10 former employees’ respondents. A total of 113 (95.76%) questionnairesrnwere properly completed and returned. In addition, interview, observation and documentrnanalysis were made to collect the necessary information. From twenty seven core processrnowner or offices and human resource core process owner or office were selected using simplernrandom sampling techniques. Non probability sampling technique was employed to selectrncurrent employee respondents whereas purposive sampling technique was employed to selectrnformer employee respondents. Results obtained were analyzed by using descriptive methodrnsuch as frequency counts, percentage and narrative description. The result of the studyrnindicated the following. The employee turnover that Bole sub city face are increase rapidly,rnmajority of current employees (92.4%) believed and responded as, when their level ofrnqualification increases their chance of working in the organization decreases. The sustainablerndevelopment activities are exclusively designed to address economic, political, cultural andrnecological sustainability. The major factors affecting the performance of sustainablerndevelopment activities were found to be lack of professional employees or Employee turnover,rnunproportionality of the number of employees with sustainable development activities. Thus,rnto alleviate the above problems the following recommendations were forwarded. Thernconcerned bodies should pay due emphasis to strengthen the current employees situation thatrnthe sub city is rendering. The sub city should consider qualification and experience inrnpromoting employees; the organization should continue and improve this good practice.rnFinally, the Addis Ababa city Administration should reconsider the current economicrnsituation of employees to encourage tenure and quality of Employee to support the sustainablerndevelopment activities