Which of the following is NOT a practical implication of Just-In-Time production? A. Production times must be very fast
B. Production must be reliable
C. Factory layout must not change to reduce movement
D. Deliveries from suppliers must be reliable
E. There must be full employee involvement

C. Factory layout must not change to reduce movement

Explanation: In a Just-In-Time (JIT) production system, flexibility and efficiency are key. Factory layouts are often designed to minimize movement and waste, so stating that the layout “must not change” is incorrect. The other options, such as fast production times, reliable suppliers, and employee involvement, are typical characteristics of JIT systems aimed at minimizing inventory and improving efficiency.