It’s Monday, and your warehouse manager is on vacation. Your assistant manager should be in charge but calls in sick. Soon, production has used so much of a single item that inventory level is becoming dangerously low, putting Friday’s commitment to an important customer at risk. Lead time delivery doesn’t support the schedule. There’s expediting, but that will send your margin down the drain.
If you’re in operations, manufacturing, or supply chain, this is garden-variety stress.