Which of the following is NOT an example of workplace material handling hazards?

Using ergonomic tools is not considered a workplace material handling hazard because ergonomic tools are specifically designed to reduce the risk of injury associated with manual handling tasks. These tools promote better posture, minimize strain on the body, and generally help workers handle materials with less risk of musculoskeletal disorders.

In contrast, lifting large, heavy items, improper stacking of materials, and unbalanced loads are all examples of material handling hazards. Lifting heavy objects can lead to back injuries and other physical strain. Improper stacking can result in materials falling or shifting unexpectedly, creating a safety risk. Unbalanced loads can make it difficult to control materials being moved, increasing the likelihood of accidents or injuries. Thus, ergonomic tools serve to mitigate risks rather than represent them, highlighting why this choice accurately does not fit the category of workplace material handling hazards.