Abstract: The computerized time clock system includes a personal computer via which employee, job and schedule records may be assembled and maintained. A computerized time clock communicates with the personal computer and received employee and scheduling data therefrom, in order to validate and record time-in and time-out transactions executed by employees. Current time records are maintained in the memory of the time clock and at the end of each day are transmitted to the personal computer for addition to permanent disk records including a record of each time-in and time-out transaction for an extended period. Sales records may also be maintained in personal computer 20, for example the quantity of liquor or food served by a particular employee or in a particular department, which sales information may be correlated with labor costs found in the permanent time records.