This study examines the level of administrative staff job performance in South West Nigerian universities and also investigates whether the administrative staff job performance is related to their sexual characteristics. An instrument titled Job Performance Questionnaire (JPQ) was used to collect the data and was administered 400 subjects in various departments to be rated by their supervisors or heads of departments. They were randomly selected through a multi-stage technique from four universities--two federal and two state universities. The data employed a descriptive research of the survey type. The data were subjected to frequency counts, percentages, bar charts, and t-test analysis. The findings revealed that the administrative staff job performance was high. Furthermore, there was no significant difference between the job performance of male and female administrative staff in the universities. Recommendations were made based on the findings that university management should encourage and motivate the workers more by providing a conducive environment to sustain and boost the morale of the workers so that they can give their best to realize educational goals. Also, more opportunities should be given to both male and female administrative workers to perform by organizing workshops, seminars and conferences, both within and outside Nigeria, so that the tempo at which the workers work may be sustained and possibly be improved upon. (Contains 1 figure and 2 tables.)