Along with the demand of more books, the movable printing technology was accordingly invented, which is a significant contribution made by china to the human beings. Inexpensive printed books became widely availabe in China during Song dynasty.
Tip. 1  You may also calculate the overhead rate based on direct labor hours. 2  Divide the overhead costs by the direct labor hours over the same measurement period. 3  In the example, the overhead rate is $20 for each direct labor hour ($2,000/100).ou may estimate the costs using historical data and then adjust for inflation. For example, if your plant uses an average 100 direct labor hours per day at $15 an hour and you expect a two percent inflation rate in the upcoming year, your direct labor costs are $1,530 (1.02 x 100 x $15) per day. Step 2.
To arrive at the total direct labor cost, multiply the amount of time it takes to make one unit by the employee's hourly rate, which includes payroll tax and benefit costs. For example, the hourly rate of $19.46 multiplied by 2.10 hours equals total cost per hour of $40.87.o arrive at the total direct labor cost, multiply the amount of time it takes to make one unit by the employee's hourly rate, which includes payroll tax and benefit costs. For example, the hourly rate of $19.46 multiplied by 2.10 hours equals total cost per hour of $40.87.