CEAS Ergonomic Interventions & Solutions Flashcards

Where should a document holder be positioned to provide optimal ergonomic benefit at a computer workstation?

Answer: At the same height and distance as the monitor, adjacent to the screen

Positioning the document holder at monitor height and distance eliminates the awkward neck movements caused by repeatedly shifting gaze between the screen and a flat desk document.

Which monitor adjustment simultaneously reduces screen glare and improves neck posture?

Answer: Tilting the monitor top slightly away from the user and reducing ambient overhead lighting

Tilting the top of the monitor slightly backward reduces glare from overhead lights and encourages a neutral neck position by preventing the worker from looking up.

Where should the lumbar support on an ergonomic chair be positioned to provide optimal benefit?

Answer: At the natural inward curve of the lower back, typically between the waist and hips

Lumbar support positioned at the lumbar lordosis (lower back inward curve, roughly L3–L5) maintains the spine's natural curvature and reduces disc pressure.

A wrist rest should be used during which activity at a computer workstation?

Answer: During rest pauses only — not while actively typing or mousing

Wrist rests are designed for brief pauses; using them while actively typing or mousing can increase carpal tunnel pressure and restrict blood flow.

What is the primary ergonomic rationale for recommending task rotation as an intervention?

Answer: Distribute cumulative exposure to repetitive motions, reducing overuse of specific muscle groups

Task rotation limits cumulative exposure to any single ergonomic risk factor by varying the muscles and joints used throughout the shift.

Which ergonomic intervention is classified as a substitution control?

Answer: Replacing a heavy manual tool with a lighter or powered version

Substitution involves replacing a hazardous element (e.g., a heavy tool) with a less hazardous alternative (e.g., a lighter or powered tool), ranking second in the hierarchy of controls.