For jobs requiring moderate to intense computer use, several measures may be taken
to help the operator reduce discomfort that is associated with the keyboard and pointing device. Depending on the job
tasks and the work environment at hand, some of these solutions may be more practical than others.
Voice Recognition Software
An excellent method to minimize discomfort associated with computer use,
if possible, it is to avoid using the keyboard and pointing device. Voice recognition software is available that will allow the
operator to dictate into many applications. This may be particularly useful for e-mail and word
processing. In addition, this lets the operator stand up at their workstation when they
may otherwise be limited to sitting. The disadvantage of voice recognition software is
that it may not be practical in shared spaces or when confidential information is
involved. Fast typists may also find the software to be slow-moving.
Micro-Breaks and Pacing Software
During periods of moderate to intense computer use, it is recommended that the operator take frequent
ten to fifteen second pauses where they rest their hands and stop using the keyboard and pointing device. Taking a
microbreak several times per hour can be as beneficial as taking fewer, longer breaks. Computer software that
monitors keyboard and pointing device use and that recommends one to take breaks and micro-breaks is
commercially available.
Adjustable Keyboard Trays
For operators who spend more than four hours per day with moderate to intense computer use, an adjustable
keyboard tray is recommended. The keyboard tray should have a sturdy, low-profile design that supports
both the keyboard and pointing device. The tray should also have an adjustable negative tilt which is important because
it can be used to improve the posture of the hand and wrist. Cheaper alternatives that are found in retail stores are
frequently problematic and should be avoided. It is important to ensure that there is proper clearance under the
worksurface before obtaining an adjustable keyboard tray.
Load Sharing
To reduce the amount of repetitive motion on their dominant hand, operators can move their pointing device
to the opposite side of the keyboard. When making this change, it is important to configure the operating
system to reverse the buttons on the pointing device.
Alternative Computer Peripherals
Research on computer peripherals is currently inconclusive. Nonetheless, ergonomic
principles can usually be applied in selecting alternatives that will improve
alignment of the hands and wrists. Minimizing strain from mouse and keyboard use can be complex.
It is recommended to seek assistance from Environmental Health and Safety before making final
decisions.
