a) using chase strategy

b) using level strategy

c) using Stable workforce with overtime

Initial number of workers Productivity Regular hours per month Regular time salary Overtime salary Inventory holding cost Backorder cost Hiring workers Laying off workers Beginning Inventory of January Required Ending Inventory of June 2 units per worker hour 200 hours 11 $ per hour 14 $ per hour 3 $ per unit per month 14 $ per unit per month 2800 $ per worker 4800 $ per worker 200 units 300 units (at least these many units) Chase strategy Period Demand Number of workers 12 4600 4300 16001200620 4700 17001 5 4400 62001 6Total 5700 29900 Beginning Inventory Regular production quantity Overtime production quantity Ending Inventory (use negative for backorder) Hiring cost Laying off cost Regular labor cost Overtime labor cost Inventory holding cost Backorder cost Total cost