How you track time and attendance varies depending on employee classification. For employees who are paid a salary that remains unchanged regardless of their hours each week (i.e., FLSA "exempt" employees), you may likely only track attendance, including sick days, vacation days, and leaves.
For employees who are paid hourly and also eligible for overtime (i.e., FLSA "non-exempt" employees), you must track the number of hours they work each week in addition to their attendance. Using the scheduling and time-tracking features in a time and attendance system, you can track hours worked, overtime, and time off for all employees without paper processes or manual calculations.