To grasp the office attendance state of employees without any trouble for transcription, calculation, etc., by inputting office leaving data, day-off date, etc., corresponding to an employee's code and recording them in the memory of a terminal, and transmitting the recorded data to a management personal computer and totalizing the data.

An employee makes the card reader 2a, provided for the terminal 2, read the employee's code recorded on the employee card 3 when coming to and leaving his or her office and inputs the office attendance and leaving data, day-off data, etc., corresponding to the employee's code, so that the data are recorded in the memory of the terminal 2. The data recorded on the terminal 2 are transmitted to the management personal computer 1 connected by a communication line and the management personal computer 1 totalizes those data to manage the office attendance state of employees. Consequently, the office attendance state of the employees can be grasped without any trouble for transcription, calculation, etc.