A server apparatus communicably connected to a vehicle working in a predetermined area and a plurality of information terminals (40a-40d) respectively held by leaders arranged in the predetermined area, comprising: acquisition means for acquiring position information of the vehicle and position information of each of the plurality of information terminals (40a-40d); reception means for receiving abnormality detection information from the vehicle ; selection means for selecting, in case where the reception means receives the abnormality detection information, among the plurality of information terminals (40a-40d), an information terminal existing within a predetermined range (R) from the vehicle as a target information terminal to which abnormality of the vehicle is to be notified; the selection means is configured to select the target information terminal based on the pieces of position information acquired by the acquisition means ; generation means for generating first abnormality notification information for notifying the abnormality of the vehicle to the selected target information terminal; andtransmission means for transmitting the first abnormality notification information generated by the generation means to the selected target information terminal; characterized in that the generation means is configured to generate, in a case where time when the reception means has received the abnormality detection information from the vehicle is outside working time of the vehicle , second abnormality notification information for making a notification of theft occurrence, and the transmission means is configured to transmit the generated second abnormality notification information to an information terminal of a manager instead of the target information terminal. reception means for receiving abnormality detection information from the vehicle ; selection means for selecting, in case where the reception means receives the abnormality detection information, among the plurality of information terminals (40a-40d), an information terminal existing within a predetermined range (R) from the vehicle as a target information terminal to which abnormality of the vehicle is to be notified; the selection means is configured to select the target information terminal based on the pieces of position information acquired by the acquisition means ; generation means for generating first abnormality notification information for notifying the abnormality of the vehicle to the selected target information terminal; andtransmission means for transmitting the first abnormality notification information generated by the generation means to the selected target information terminal; characterized in that the generation means is configured to generate, in a case where time when the reception means has received the abnormality detection information from the vehicle is outside working time of the vehicle , second abnormality notification information for making a notification of theft occurrence, and the transmission means is configured to transmit the generated second abnormality notification information to an information terminal of a manager instead of the target information terminal. <EOS>