A system for tracking an employee's time comprises a geographic location aware device able to detect a presence within a geo-fence area in real time, create a time and location message when the real time geographic location detector enters into or departs from the geo-fence area; and transmit those messages to a remote tracker which may be at one or a plurality of remote locations. The remote tracker comprises software that calculates a time differential between the arrival time and the departure time and uses the calculated time differential to calculate a gross pay for the employee at a predetermined rate of pay.