Case Study 2: You run a packing department where customer orders are categorized into small, medium and large batches. In general you try to rotate your packers between all sizes of customer orders since there have been prior cases reported of shoulder strain from folks doing large batches for a full shift. Ian is your best large item packer; he can do twice the expected rate seemingly without even trying. He has been packing large items all morning. After lunch you see your queue has grown in the large batch area. If you keep Ian in the large item packing area, he can get the work accomplished without any impact to production. Or you would need to move two employees into backfill his role which may impact your overall production for the day. What do you do?