Construction machine work information management system

A construction machine work information management system, comprising:

• a server;
• a transmission unit attached to the construction machine and configured to transmit a wireless signal indicating first identification information for identifying the transmission unit itself;
• and
• a plurality of reception units disposed at a plurality of monitoring target positions at a work site of the construction machine, the reception units being configured to receive the wireless signal when the construction machine approaches,
• wherein when receiving the wireless signal, each of the plurality of reception units transmits second identification information for identifying the reception unit itself to the server together with the first identification information indicated by the received wireless signal, and
• wherein the server includes:
• a work information storage unit, and
• a data processing unit configured to store, in the work information storage unit, an information group in which predetermined information based on at least one of the received first identification information and the second identification information and time information indicating time of the reception are associated with each other, every time the first identification information and the second identification information are received from each of the reception units.