Employees Attendance Score

Features - 
On an employees account, you'll see a stats section.  Using the date range, the Attendance Score is calculated by: Attendance Score = (1 - (TotalDaysAbsent + (TotalDaysLate * 0.5)) / TotalScheduledDaysWorked))

EX.  Sally was scheduled to work 20 days.  She was absent (excused/unexcused/sick) for 2 days and she was late for 3 days.  The system will calculate her Attendance Score as follows:

(1-(2+3*.50))/20)  = 82.5