Chairs should be matched to the job function and individual needs. Foam in commercial seating is dense enough to support weight evenly and stand up to regular use. Armrests are very helpful in reducing neck and back strain, and if chairs are going to be used by a variety of people, are ideally adjustable for height. If significant time is to be spent in a chair, the more adjustable ergonomic features that are available, the better the user will be able to vary his or her position to minimize fatigue and strain while maintaining maximum support. Productivity is maximized when these adjustments can be made while seated.
Task seating generally provides seat height, back depth and back height adjustments.
It is suited for applications which do not require long stretches of time at one station. People who frequently change stations or get up and down a lot can do very well with this type of seating. Ergonomic features such as back tilt, back angle adjustment, seat angle adjustment, arm height adjustment, and tilt lock enable the user to adjust seating positions frequently while maintaining support, comfort and productivity. They are especially useful for work situations which require extended periods at a computer or similar work station. Managerial seating often has swivel and tilt capabilities.