What is the most reliable method to ensure a worker can use new equipment correctly?

Observing the worker use the equipment directly is the most reliable method to ensure that they can operate it correctly. This approach allows for real-time assessment of the worker's skills and understanding of the equipment's operation. By watching the worker, a trainer or supervisor can identify any incorrect techniques, safety issues, or misunderstandings that could lead to errors.

This method also provides an opportunity for immediate feedback and correction, helping to reinforce proper techniques in a practical context rather than simply relying on theoretical knowledge or second-hand information. It ensures that the worker can not only recall instructions but apply them effectively in an actual working environment, which enhances both safety and efficiency in the workplace.

In contrast, verbal confirmation and written tests may indicate a level of understanding but do not guarantee that the worker can apply this knowledge practically. Group discussions might foster a broader understanding among team members but lack the individualized assessment necessary for ensuring competence on equipment use. Therefore, observing the worker directly is crucial for effective training and skill verification.