Overtime calculation for E rickshaw Assembling unit

I run a small assembling unit of E Rickshaw ... Having a team of 7 people who is doing all the work which includes servicing, loading unloading of items and Assembling too...

How do i calculate overtime of staff... I dont want to jus pay them as per hour they working as i belive it doesnt justify the work they doing ... Please help

Overtime hours mean the hours the worker has worked over and above the scheduled hours of work in the establishment. The scheduled working hours is 8 hours per day and this can go up to 9 hours but should not be more than 48 hours if you sum up in a week. Accordingly, you will have to pay overtime wages at double the average rate of wages for every hour worked beyond 48 hours in a week. While calculating hours worked in a week, the days the employee has remained on leave with pay should be considered as worked and that day shall account for 8 hours.