ergonomic hazards

Instructions: Locate a person working on a VDT.Observe the work practices and the position of the person.Take notes in regards to the position and the tasks the person is performing.Be sure to note down the specifics using the information from the diagram in your book (page 217).Don’t forget to take a picture of the observation.Make a determination as to the factors that could be changed that would reduce the overall exposure to ergonomic hazards.Ask the subject to apply the corrections to the workstation orientation.Once the changes are made, take a second picture of the corrected workstation.

The time invested in the observation and correction portion of this exercise should be no more than 25 minutes.Once the exercise is complete, document your findings.Be sure to note the workstation details before and after the corrections are made.Use the before and after images to highlight your findings.Be sure to provide some standard pieces of information in your summary such as; who, what, when, where, why, how.Total length requirement is one page, double spaced.Hand written papers are tough to read and will most likely be assigned zero credit.

Corrective Action Guidelines (see page 217 for additional detail)

Head – positioned directly over the shoulders without straining about an arm’s length away from the screen.

Neck and Shoulders – relaxed, without slouching

Back – upright or inclined, slightly forward from the hips

Elbows – relaxed at a 70⁰ – 135⁰

Wrists – relaxed and straight, not angled up or down (flex, extend)

Knees – placed slightly lower than the hips

Chair – sloped slightly forward so knees are in the correct position

Screen – eye level

Keyboard – placed at elbow level

Work Surface – 70⁰ – 135⁰, adjust chair to accommodate

Feet – firm on floor unless height is an issue, foot rest

Lighting and Fatigue – prevent screen glare and improve lighting

  • position the computer screen 20 to 24 inches from the eyes. The center of the screen should be about 10 to 15 degrees below the eyes for comfortable positioning of the head and neck.