This study examined the effect of employee turnover on goal attainment in maritime companies in Port Harcourt, Rivers State, Nigeria. Subject for the study were 291 employees as sample size drawn from a population of 1284 using Krejcie and Morgan table. The cross-sectional survey method and stratified random sampling was used through convenience approach in the selection of respondents. The questionnaire method was used to collect relevant data for the study. Data collected was analyzed, and the analysis reveals that voluntary and involuntary turnover has a significant impact on organizations goal attainment. Conclusion was drawn; it’s however obvious from the literature review and past research findings in the course of this study that employee turnover is a difficult phenomenon to control. Recommendations were given which include the need for management of maritime companies to put policy in place in areas of employee welfare and conditions of service of employees. This will reduce the exit of experienced employees from maritime companies.