A chair includes a base, a back upright operably supported on the base for movement between an upright position and a reclined position, and a back construction. The back construction includes a back support shell attached to the back upright, and further includes a cushion assembly attached to the back support shell with quick-attach top and bottom connectors. Specifically, the back support shell includes top apertures, and the cushion assembly includes hooks for drop-in attachment to the top apertures. The back support shell also includes a molded bottom section defining a horizontally extending recess, and the back cover includes a stiffened edge flange configured to frictionally engage the recess to retain the back cover to the back support along the bottom section of the back construction. The cushion assembly includes a cover assembly that includes an upholstered front panel, and a rear panel forming a sock that can be pulled upwardly onto a cushion. The rear panel includes a first sheet section having a one-directional stretch in a vertical direction, and further includes a second section having a high-stretch property. The second section hangs downwardly from the front panel and has a strip of stiff material sewn along its lower edge to form the stiffened edge flange noted above.