The Average Monthly Wage is applied to:
Wages in lieu of notice (by month)
Bonus Average Regarded Wages
Double Pay
User-Defined Formula
For Monthly Rate employees,
Average Monthly Wage = Accumulated Regarded Wages ÷ Round((Accumulated Regarded Days ÷ 365 × 12), 1)
Please note that the number of months is rounded to one decimal place before the calculation is performed, based on Example 4 below.
Monthly wages refer to the employee’s average monthly wages earned in the 12 months immediately preceding the termination date. It generally includes:
Basic salary
Overtime pay
Commissions
Shift allowances
Productivity bonuses
Regular payments for work performed
For Daily/Hourly Rate employees,
The Average Monthly Wage is 18 times the Average Daily Wage over the last 12 months.
Reference: