Just-In-Time (JIT) is a lean manufacturing principle. What is its primary benefit?

Just-In-Time (JIT) is a lean manufacturing principle. What is its primary benefit?

• A. Minimizes inventory by receiving goods only as needed, reducing holding costs and waste, and improving cash flow.
• B. Increases buffer stock to guard against shortages.
• C. Requires large warehousing and storage costs.
• D. Delays production until materials arrive in bulk.

Answer: (A)

Just-In-Time centers on delivering materials exactly when production needs them, so on-hand inventory stays very low. This approach makes the main benefit clear: it dramatically reduces inventory costs and waste because parts are not kept in stock for long periods. With less money tied up in stored materials, cash flow improves and the production process becomes more responsive to actual demand. It also lowers the risk of obsolescence and storage-related waste, and it encourages a smoother, more predictable workflow.

Think of it as a pull system: replenishment is triggered by actual production needs rather than forecasts, which helps keep inventories lean and aligns inputs with what’s being produced right now.

Choosing more stock to guard against shortages would raise holding costs and waste, which goes against the whole idea of JIT. Keeping large warehouses or storage space increases costs. Waiting to produce until materials arrive in bulk delays the process and contradicts the just-in-time timing.