A work surface arrangement comprising a support structure extending upward from a base end, a first work surface forming member supported by the support structure at a first vertical height, a second work surface forming member supported by the support structure at a second vertical height and extending to a first side of the support structure where the second vertical height is lower than the first vertical height, the second member including an undersurface, a first cover supported by the support structure and extending downward below the first member to a lower edge below the second vertical height, a second cover supported by the support structure and extending downward from a height proximate the undersurface of the second member and spaced from the first cover to bound a cavity, at least one horizontal channel supported by the support structure between the first and second work surface forming members to face the first side.