Implementation of quality management system is an effective way to achieve
successful performance of the organization. ISO 9000 is one of the quality
management system that becomes the basis of development for assuring the quality
of products/services area. The benefits of implementing ISO 9000 have been
experienced by many organizations. However, there is still a lack of interest in this
international standard. The purpose of this research is to assess the contractor
performance based on implementation of ISO 9000 standard for non-ISO 9000
certified companies. Questionnaire were delivered directly to engineers in
construction companies. A three-step was used to obtain the data from 62 returned
questionnaires. The results shows the performance of the contractor based on ISO
9000 seven principles. The gap was identified between the performance of
contractor in reality and the level of importance of ISO 9000. The finding will help
the future researcher to work and studies about the implementation of the ISO 9000
for a better performance.