A device for warning occupants in a vehicle is proposed which is connectible to a passenger-compartment sensory system and which has a warning device for an occupant, the warning device being activated as a function of signals from the passenger-compartment sensory system. As a warning device, a display, and/or a loudspeaker, and/or haptic means can be used. The vehicle occupant is warned, in particular, if he/she is in the so-called out-of-position situation. In the process, it is checked whether the occupant has been in the out-of-position situation, without interruption, for a predefined time period. Only then does a warning also follow.