Final answer:
True, JIT systems indeed utilize a backward communication approach where the flow of work is driven by demand with each process signaling its predecessor when parts are needed.
Step-by-step explanation:
The student's question regards whether it's true that the control of flow of work in Just-In-Time (JIT) systems is characterized as a backward communication approach. This statement is True. In JIT systems, the flow of work is indeed controlled in a backward manner, which means that production activities are driven by demand or actual orders rather than forecasts.
Each process signals its predecessor to produce additional parts only when they are needed, which avoids overproduction and waste. This communication flow essentially allows for a pull rather than a push approach to inventory and production planning.