To rapidly easily manage a working time in an enterprise particularly employing many employees or a retail store including a plurality of shops via a franchise chain, by reducing a cost of personnel expenses and a time of summing of time cards by a managing system including ID cards, a terminal including a card reader, a communication network and a server.

A working time managing system comprises the ID card 20a, etc., each for recording identification information, the terminals 22a, etc., each having the card reader, the communication network 24 for transmitting the information acquired by the terminal and the server 34 connected to the network for storing the information and the communication network 38 connected to the server, and enterprise clients 41a, etc., for acquiring and reading the information regarding the working to be provided in a specific information format via the networks.