Task operator office chairs, Office Furniture Online offers you a full range of ergonomic  office chairs from the simple student chair up to the full ergonomic 24/7 operator task chair. Depending on your budget your can buy a simple chair with one lever for gas height adjustment only on a trolley base with a 3 year warranty or you can invest a bit more for a 3 lever chair with a 10 year warranty. Task and operator chairs have a large number of different options and upgrades