A height adjustable table comprising - at least one electric linear actuator, - a controller for controlling the at least one linear electrical actuator, - a system for determining the actual height adjustment level of the adjustable table associated with the controller and providing input information to the controller about the actual height adjustment level of the adjustable table, - an operating unit connected to the controller for user activation requesting an adjustment of the height level of the table by supplying the at least one linear actuator from an appropriate source of electrical energy, the controller comprising - a memory for storing at least one height adjustment setting (7,8) referring to a sitting position or a standing position, - a timer device adapted to monitor the time for which the height adjustment setting (7,8) has been in its present state, the states referring to a sitting position or a standing position, and - a memory for storing a predetermined programmable timer value for reminding the user to adjust the height of the height-adjustable table from the height adjustment setting (7,8) referring to a sitting position to a standing position or vice versa, and where the controller is configured to continuously compare the timer value obtained by the timer device with the predetermined programmable timer value and to calculate a value expressing the progress towards time-out of the predetermined programmable timer value, and where the height-adjustable table further comprises a light emitting arrangement adapted to emit light with a wavelength within a range of wavelengths starting with a first wavelength (y) and ending with a second wavelength (z) corresponding to the value expressing the progress towards time-out of the predetermined programmable timer value, characterized in that the light emitting arrangement is configured to change color of the emitted light in a fluent transition from green, over orange to red during said progress towards time-out of the predetermined programmable timer value. - at least one electric linear actuator, - a controller for controlling the at least one linear electrical actuator, - a system for determining the actual height adjustment level of the adjustable table associated with the controller and providing input information to the controller about the actual height adjustment level of the adjustable table, - an operating unit connected to the controller for user activation requesting an adjustment of the height level of the table by supplying the at least one linear actuator from an appropriate source of electrical energy, the controller comprising - a memory for storing at least one height adjustment setting (7,8) referring to a sitting position or a standing position, - a timer device adapted to monitor the time for which the height adjustment setting (7,8) has been in its present state, the states referring to a sitting position or a standing position, and - a memory for storing a predetermined programmable timer value for reminding the user to adjust the height of the height-adjustable table from the height adjustment setting (7,8) referring to a sitting position to a standing position or vice versa, - a memory for storing at least one height adjustment setting (7,8) referring to a sitting position or a standing position, - a timer device adapted to monitor the time for which the height adjustment setting (7,8) has been in its present state, the states referring to a sitting position or a standing position, and - a memory for storing a predetermined programmable timer value for reminding the user to adjust the height of the height-adjustable table from the height adjustment setting (7,8) referring to a sitting position to a standing position or vice versa, and where the controller is configured to continuously compare the timer value obtained by the timer device with the predetermined programmable timer value and to calculate a value expressing the progress towards time-out of the predetermined programmable timer value, and where the height-adjustable table further comprises a light emitting arrangement adapted to emit light with a wavelength within a range of wavelengths starting with a first wavelength (y) and ending with a second wavelength (z) corresponding to the value expressing the progress towards time-out of the predetermined programmable timer value,