Background & Aim: The main aim of performance appraisal is aid to staff development and increasing job motivation. Outcomes of performance appraisal consider as a determining indicators of the amount of success in achieving the mentioned aims. The aim of this study is to determine the employed nurses’ views regarding the performance appraisal's outcomes and its relation with job motivation in medical-surgical wards of affiliated hospitals of Tehran University of Medical Sciences.

Methods & Materials: This investigation is a descriptive correlational study. The sample size was 120 of employed nurses in medical-surgical units in Tehran University of Medical Science that was selected by cluster sampling. The data was collected by questionnaire. Descriptive statistics, t-test and Pearson’s correlation coefficient were used for analysis.

Results: Perception of the most samples was almost positive (65%) about performance appraisal’s outcomes. They believed that the rate of the job motivation in surveyed units was low. There was a statistical significance relationship between performance improvement as one of the outcomes of the performance appraisal and job motivation (p<0.05).

Conclusion: Aiding to nurses performance improvement with using of performance appraisal was the only factor that was correlate with the job motivation in comparison with the other expectances of performance appraisal.