The ergonomic implications of a doorless system in an automobile assembly line

Abstract

A doorless assembly system (the Nagamachi System) was first implemented at Nissan Motor's Zama Plant and has since spread throughout Japan and the rest of the world. With this system all doors are taken off a car body in the first process of a car assembly line and assembled in a separate door assembly line. This system aims to obtain an ergonomic profit from the reduction of a worker's workload. The implementation of the system results in such a reduction in workload, as well as an increase in work efficiency, and higher productivity.

Keywords:

• Doorless system
• Working posture
• Participatory ergonomics
• Job design.