The now commonly available option of seat tilt should be approached with caution. It can be valuable for workers who spend a lot of time bent forward over their desks, but for most, the fixed horizontal seat surface provides adequate versatility. The seat tilt adjustment mechanisms available allow backward as well as forward tilt, so there is the danger that users will leave the adjustment in the backward tilt position at all times, thus putting undesirable pressure under their thighs. Also, some mechanisms free both seat tilt and backrest angle at the same time, making it quite.
