Abstract: An adjustable chair for use at a work station such as a computer work station permits distribution of the user's weight between the user's legs and back. The chair includes a seat cushion, support bars upon which the seat cushion is mounted and a knee cushion. Support bars have the knee cushion mounted thereon and a chair adjustment mechanism is provided which interconnects the first and second support bars in such a manner as to permit simultaneous, uniform adjustment of both the seat cushion and the knee cushion by the user so that the user may easily adjust the relative positions of the seat cushion and the knee cushion in relation to each other as well as in relation to a support surface so as to provide an adjustable chair for use at a work station which is comfortable for long periods of use.