Working from home? Check out our 2020 guide on how to effectively setup an ergonomic workspace at home.
An office chair should have the following features:
adjustable seat height
curved lower back (lumbar) support on backrest
adjustable backrest height (allowing the lumbar support to be adjusted to suit the individual)
adjustable backrest tilt (in the forward/backward direction). This is used in combination with the seat pan tilt to allow the user to make adjustments to help maintain the natural curve of the spine
adjustable seat pan tilt (allowing the seat to tilt forwards slightly)
a rounded front edge of the seat
adjustment controls that are easy to operate from the seated position
seat pan depth adjustment (by sliding the seat). This feature reduces the need to order chairs with different sized seats to suit shorter or taller workers
a five-point base. A chair with five casters is less likely to tip over than one with four casters
comfortable cushioning and covering on the seat and backrest.
Office Chair: Backrests
Backrests should support the upper and lower back and be adjustable in height. By raising or lowering the backrest, it should be adjusted so that the lumbar support fits snugly against the curve of the lower back.
Backrests should also be adjustable in the forward/backward direction. An angle of 100-120 degrees (i.e. slightly more than a right angle) between the trunk and thighs enables better spinal posture. This can be achieved by adjusting the backrest angle in combination with the seat pan tilt.
Where jobs are highly sedentary, the user may benefit from a ‘free-floating’ back support mechanism incorporated into the backrest. This enables the backrest to move through a pre-set range as the back moves. The user is able to move through a range of acceptable postures while still remaining in a supported seated position.
Office Chair: Armrests
Chairs can be purchased with or without armrests. When purchasing new chairs, consideration should be given to the design of and need for armrests. Armrests can provide forearm support and help the users when lowering into and rising from the chair. Forearms should rest comfortably on the armrests, with shoulders relaxed. Generally, armrests should be:
height adjustable and able to be turned inwards or outwards
Armrests should be removed if they:
prevent the user from getting close to the desk and at a comfortable distance from the keyboard and screen
interfere with using the keyboard, mouse (or other input devices)
prevent the user from turning the chair or getting up from the chair easily
are not adjustable
result in the back bending sideways when leaning on the armrest. This means that that the armrests are too low for the user.
While standard chairs may suit the majority of users, specific seating will be required for some users. We offer a wide range of ergonomic office chairs available that will cater for all users and the type of work they do.
There are many different configurations for computer based workstations available. Computer based workstations should be designed to allow adequate height, depth and work surface to suit the user, the type of work they do and the equipment they use. The workstation should have the following features:
a flat smooth surface for the keyboard and mouse so they can be used on the same level
space to position all the equipment so that posture or vision is not compromised when completing tasks
a suitable height (e.g. 680-720 mm when measured from the top of the workstation to the floor)
adequate clearance for legs under the desktop
sufficient space under the desk to comfortably stretch legs.
Height Adjustable Standing Desks
Height adjustability is another highly desirable workstation feature and all height adjustable standing desks need to be to easily adjustable. Sit/stand desks allow the desktop to be used in either the seated or standing position:
The workstation can be raised or lowered without any disruption to the placement of the equipment or desk items.
To provide for a standing position, the desktop needs to be able to rise to at least 1100 mm.
It is better practice to have a proportion of workstations in the work area that can be adjusted for both sitting and standing work. This is especially important for highly sedentary work or where work requires sitting or standing positions for long periods. Height adjustability for seated positions is particularly important for those who are very tall or short, so they can adjust the workstation to suit their needs.
How to set up your monitor
The main considerations include the following:
the neck is not arched back and the chin does not extend forwards
the screen characters can be seen clearly and comfortably
it is suitable for the specific eyewear worn by the user.
A general guide to setting up your monitor:
screen height - the top of the screen should be set at eye level or lower this may reduce visual fatigue.
viewing distance - position the screen about one arm length away or slightly further. This may reduce visual fatigue.
try various positions to determine the ideal viewing distance and height.
display - adjust the font size or display so that the content can be read easily.
Most monitors are supplied on stands that have a degree of height adjustability. The size of the screen may dictate that it is placed directly on the desk top. Alternatively, monitors can be mounted to a separate monitor arm. If using a monitor stand or arm consider:
ease of adjustability
use of separate monitor arms where two monitors are being used this allows greater flexibility in their placement
lowering the height of the monitor to desk level, particularly for large screens and for some users with multi-focal lenses. Multiple computer monitors The principles for setting up multiple monitors are the same as those for setting up a single monitor – that is, so that the displays can be seen easily in a comfortable posture. Tips to help set up multiple computer monitors If one monitor is used more frequently than the other:
place the primary monitor straight ahead to avoid twisting the body or neck to one side to view the display
move the chair when using secondary monitors to avoid bending or twisting to see the displays
lower the monitor height so that the top of the monitor is at eye level or lower
position the most frequently used displays lower and central on the screen page for a large size monitor with multiple displays on the one screen page. If using multiple monitors with equal frequency then: arrange the monitors in an arc, position the screens at equal viewing distance from the user and position the screens right next to each other.
If using a combination of computers (e.g. a desktop monitor and a laptop computer):
place the laptop on a docking station or stand so that the laptop display is at the same height as the desktop monitor
place the laptop and desktop monitors at an equal viewing distance, particularly if the user is wearing reading glasses. If using monitors that are stacked vertically:
position the most frequently used display slightly below eye level
position the less frequently viewed displays above eye level
Don’t forget to change postures throughout the day
There is no perfect computer workstation set up that can be used all day. It is important to change posture or to do something that uses different muscles many times throughout the day. Extended periods in similar postures can lead to fatigue or overloading parts of the body and can contribute to injuries such as sprains and strains. There are many other benefits to moving and changing postures regularly through the work shift. It is better to take several short breaks rather than one long one.
Ways to do this include:
rotating and encouraging a variety of work tasks and short regular breaks so that there is variety in posture throughout the day. For example, make a few phone calls, conduct an administrative task away from the workstation or undertake filing after a period of typing
using opportunities to move between sitting and standing positions at the workstation
taking micro pauses e.g. moving the hand off the mouse or keyboard when not in use
placing the printer, scanner and photocopier away from the workstation
using a standing desk