Abstract: A method for tracking time and location of an employee based on a predefined schedule. This method may uses time tracking software installed on a mobile device to detect the presence (or lack of presence) of an electronic signal emitted by a NFC (near field communication), BLE (Bluetooth Low Energy), or other wireless device. The detection may trigger the mobile application to communicate to a server to determine if the employee is scheduled to work at a work zone, which may result in the mobile application clocking in/out the employee. Also, geofencing may be used in combination with scheduling to clock in/out employees when entering a geofenced area determined by the employer. These location detection embodiments of the present invention may be used individually or in combination to improve location accuracy. A supervisor may also use this system to review the timesheets, make changes and integrate the data into a Payroll system.