A control unit for a wearable sitting posture assisting device, having at least one operation program, which is designed to control a blocking means of at least one leg unit of the wearable sitting posture assisting device in dependence of a sensor signal representing a sitting angle between an upper support and a lower support of the at least one leg unit, to a wearable sitting posture assisting device with such a control unit and a method for controlling a wearable sitting posture assisting device.
