In lean manufacturing, which of the following is a classic example of waste that should be eliminated?

In lean manufacturing, which of the following is a classic example of waste that should be eliminated?

• A. Idle workers
• B. Unnecessary processes
• C. Excess Inventory
• D. Highly Specialized Workforce

Answer: (A)

In lean, any activity that does not add value for the customer is treated as waste, and this includes underutilized people. Idle workers sit idle while work is available or could be aligned differently, which breaks flow, increases cycle times, and raises costs. Lean seeks to balance workloads, smooth demand, and pull work through the system so people are always contributing value. Seeing workers idle is a clear signal that the process is not flowing smoothly and that improvements—such as leveling work, removing bottlenecks, or better synchronization with demand—are needed. That’s why idle workers are a classic example of waste to eliminate. Excess inventory is also waste, but the focus here highlights the cost of people not adding value, which is central to lean’s pursuit of efficient flow and utilization of human resources.

In lean, any activity that does not add value for the customer is treated as waste, and this includes underutilized people. Idle workers sit idle while work is available or could be aligned differently, which breaks flow, increases cycle times, and raises costs. Lean seeks to balance workloads, smooth demand, and pull work through the system so people are always contributing value. Seeing workers idle is a clear signal that the process is not flowing smoothly and that improvements—such as leveling work, removing bottlenecks, or better synchronization with demand—are needed. That’s why idle workers are a classic example of waste to eliminate.

Excess inventory is also waste, but the focus here highlights the cost of people not adding value, which is central to lean’s pursuit of efficient flow and utilization of human resources.