This research was conducted to investigate the effectiveness of using a task-based learning (TBL) program in developing oral performance skills of EFL preparatory stage teachers. 20EFL preparatory stage teacherswere randomly chosen for the study group. Teachers were trained through the task-based program to develop their oral performanceskills. Instruments of the study included a needs assessment questionnaire to determine the sub skills of oral performance skillsthat were mostly needed by EFL preparatory stage teachers., a pre-posttest  in oral skills. A training program based on task based approach was designed by the researcher. Analysis of data obtained by teachers (using t-test) revealed that the study group significantly achieved higher on the postoral performancetest as the difference in the mean scores of the two administrations was statistically significant in favor of the post-performance. Results of the study indicated that using a task-based learning (TBL) approach contributed more to thepreparatory stage EFLteachers' oral performance.The study recommended the need for improving preparatory stage EFLteachers' performance through training courses, workshops and ongoing improvement to increase their efficiency within the field of practicing teaching the English language