You can submit suggestions, discuss work methods, and report tasks that are hard to perform. You are the one on the line, so it is easier for you to point out possible improvements that bring about better work settings.
You can also provide inputs in equipment design, procedures, and training and help evaluate equipment; anything that doesn't fit has to be appropriately taken care of. You can and must report injuries as soon as they occur for your and your co-workers' safety.
By doing all that, you improve your job satisfaction and motivation as you are an active part of the changes.
Source: The Occupational Safety and Health Administration: Guideline for Retail and Grocery Stores
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