To constitute a time clock, a totalization and management system for clocking-in/out data, etc., which enable one employee to use multiple time clocks.

This time clock has a card recognizing means for discriminating a time card, a timer means, a display means for displaying current time through the timer means, a printing means for printing clock-in time or clock-out time on the time card according to the time generated by the timer means, a storage means which stores attendance information on the printed clock-in or clock-out time, etc., corresponding to the card, and a communication means which can communicate data to a separately provided computer for management.