Abstract
This study focused on human error made in assemly processes that can lead to product defects. The assembly process flow of the product was the first step to begin this study, and there were a total of nine processes involved in the production. The cycle time used to complete every process at all workstations were measured and recorded. Finally, the data on the defects on each part of the product were collected and analyzed. Human error was one of the major sources of product defects in pager assembly, where it contributed 17.69%. There were a total of 97 defects due to human errors during the manual assembly. It was observed that the number of human errors was higher in tasks which involved higher number of steps or/and required specific skills. Time pressure can also influence the occurrence of human errors, where the relationship between time pressure and human error can be represented using a U-model. where overly low and overly high production can lead to greater number of human error.
