CEAS Ergonomic Interventions & Solutions Flashcards

In the hierarchy of ergonomic controls, which type of intervention is considered most effective?

Answer: Engineering controls (redesigning the task or workspace)

Engineering controls are most effective because they eliminate or reduce the hazard at the source rather than relying on worker behavior.

What is the primary ergonomic benefit of a height-adjustable (sit-stand) workstation?

Answer: Allows posture variation, reducing static load on the spine and lower extremities

Sit-stand desks reduce prolonged static posture by enabling workers to alternate positions, distributing musculoskeletal load across different body regions.

Which keyboard design feature most directly reduces ulnar deviation of the wrists?

Answer: Split or contoured keyboard design

Split and contoured keyboards position the hands in a more neutral orientation, reducing the inward bending (ulnar deviation) common with standard flat keyboards.

What does an anti-fatigue mat primarily address in a standing workstation ergonomic intervention?

Answer: Reduces lower-limb fatigue and discomfort from prolonged static standing

Anti-fatigue mats encourage subtle micro-movements of the leg muscles, improving circulation and reducing fatigue during prolonged standing work.

Which administrative ergonomic control is most commonly recommended to reduce repetitive strain exposure?

Answer: Task rotation among workers to vary muscle groups used

Task rotation distributes repetitive motion exposure across different muscle groups, reducing cumulative strain on any single body region.

When a CEAS specialist recommends a document holder, what is the primary purpose?

Answer: Position source documents at the same height and distance as the monitor to reduce neck rotation and flexion

A document holder aligned with the monitor eliminates repeated neck rotation and vertical gaze shift between desk and screen, reducing cervical strain.