To manage the service state of an employee required for outside work in real time.

A manager refers to work schedules and member skills in a member database 241 in a management site 2 to indicate service contents to an employee required for outside work, who is appropriate to execution of the work, through an E mail or the like. When the employee required for outside work calls a subscriber telephone set 22 from a PHS terminal 4 at the time of starting the work in a place of service, a management site 2 retrieves a database on the basis of the telephone number of the terminal 4 to specify the call originator. The management site 2 retrieves the position of the terminal 4 from a PHS position information server 3 through the Internet 1 and displays this position in a map displayed on the monitor screen of a personal computer 21. The employee required for outside work inputs required information from the terminal 4 by keys in accordance with a voice indication from the telephone set 22, and the management site 2 stores the call originator, the time, the position, the work classification, and the work start (end) in a work database 242. Thus his or her service state is detected in real time.