A workplace system comprises a work table, a height-adjustable work chair with a gas spring device, a plurality of sensors, an evaluation unit and a feedback device. At least one of the plurality of sensors is mounted on the worktable. At least one further of the plurality of sensors is mounted on or in the gas spring device and arranged to detect posture data of a user of the work chair. The evaluation unit is configured to receive the posture data and further measurement data from the plurality of sensors, to determine a well-being measure of the user on the basis of a joint evaluation of the received posture data and the measurement data, and to control the feedback device as a function of the well-being measure.
