FIRA logo

Ergonomics

Ergonomics helps you set up an office chair

Setting up | Driving a chair | Avoid the risks | The wider environment

Setting up a chair

picture of ergonomic diagramSeat height:
Thigh to trunk angle at 90o or slightly more to help keep pelvis upright
 
Back height:
Lumber to fit small of back to ensure
natural 'S' shape spine
 
Armrests:
Touching forearms when shoulders and elbows relaxed at the side to avoid strain in neck and upper limbs
 
Tension:
Floating when feet off the floor to encourage improved blood circulation and comfortable changes of posture (not too soft you instantly recline or too hard that you can't naturally push back )
 
Seat depth:
Bottom at back of seat and three fingers gap between front edge of seat and behind knees to ensure adequate thigh support but without obstructing leg movement

infrastructure image

How to drive a chair - pragmatic ergonomics

picture of ergonomic diagramThe best ergonomic chairs can't do the job for you. Awareness and a little bit of training goes a long way.

infrastructure image

Why bother - ergonomics helps you understand the risks

The main risks are the health problems associated with VDU work, which include:

By ignoring the potential problems of poor or unadjusted seating, employers face having to deal with the following:

infrastructure image
picture of ergonomic diagram

Adjusting the wider environment

Ergonomics helps you practice tactics for keeping an upright healthy posture

infrastructure image
picture of ergonomic diagram