The purpose of the present invention is to provide a display device for work machines that is capable of obtaining, when required, information required for the operation of a work machine or a work device, without being conscious of the information acquisition. A display device (27) for a combine (1) being a work machine capable of interruption display of any information on a display screen (30) and wherein display of information in relation to the combine (1) or a harvesting unit (5) or threshing unit (9), etc. being work devices provided in the combine (1), occurs via an interruption display screen (38) being one embodiment of interruption display, when a prescribed operation happens in relation to the combine (1), the harvesting unit (5), or the threshing unit (9), etc.