The purpose of the study was to study the impact on BAU employee performance of human resources management practices. there were 150 employees in the sample. In order to achieve the study, Intent of the collection of data from150 employees by self-administrated questionnaires. Statistical techniques were used to examination the research hypotheses. then evaluation and analyzing the study hypotheses, the outcomes indicated that there is a significant impact of human resource management practices (performance appraisal, recruitment, manpower planning, training and development and compensation ) on employees’ performance at BAU in Jordan. The study recommends that BAU has to carry out periodical studies for the purposes of evaluating its employee performance .In addition to implement more fair incentives.