2.13. Because of its labor contract, a company must hire enough labor for 100 units of production per week on one shift or 200 units per week on two shifts. It cannot. hire, lay off, or assign overtime. During the fourth week, workers will be available from another department to work part or all of an extra shift (up to 100 units). There is a planned shutdown for maintenance in the second week, which will cut. production to haff, Develop a production plan. The opening inventory is 200 units, and the desired ending inventory is 300 unis