Disadvantages of JIT
A supplier that does not deliver goods to the company exactly on time and in the correct amounts could seriously impact the production process.
A natural disaster could interfere with the flow of goods to the company from suppliers, which could halt production almost at once.
An investment should be made in information technology to link the computer systems of the company and its suppliers, so that they can coordinate the delivery of parts and materials.
A company may not be able to immediately meet the requirements of a massive and unexpected order, since it has few or no stocks of finished goods.