No matter what industry you work in, computers are
commonly used. Extended work with computers can lead to
muscular fatigue and discomfort, usually in the back, arms,
shoulders and neck. The risk of a musculoskeletal disorder
(MSD) is higher for computer operators than for other office
workers. And the risk increases as the intensity of computer
work increases.
This document outlines how workstation layout, lighting,
and task design can affect the physical and visual demands on
people who work with computers. It also provides a checklist to guide your company in what to look for
when assessing computer workstations. Using a laptop and other mobile devices as the main computer in
an office poses some special challenges. Contact an ergonomist for additional tips and precautions.
Workstation Layout
Keyboard Position
When working at a keyboard, the user should sit in an
upright position with the upper arms hanging naturally from
the shoulders. The elbows should be bent at about a 90°
angle when the fingers are on the home row of the keyboard.
If the keyboard is too high, the user must raise his or her
arms and shoulders. This can cause fatigue and discomfort
and may increase the risk of injury. If the keyboard is too
low, the user has to stoop forward which can stress the arms
and the back.
In both cases, the wrists will also be strained. It is important that the equipment is positioned so that the
wrists are straight and not bent. Typically, if the keyboard is at the appropriate height, the keyboard legs
(if any) should not be raised.
OFFICE WORKSTATION DESIGN
WSPS.CA
