I am reminded that work environment in ISO 9001 now includes notes describing how the clause could be applied to people issues. I suppose the assumption is that it's about error versus deliberate mischief, but Randy is right when he keeps pointing out that when someone really wants to misbehave, he/she will find a way to do so. Those of us who harp on process controls are trying to make it harder for that person to succeed.
That's why I included both in my posts. Processes are made of man-material-machine-method and mother nature, and (hu)man is usually the most error prone. That's why the push to improve processes and automate versus inspect.
If it happens once, it can happen again. These days with labor stresses it is important to pay attention and do what we can - though we all understand sometimes we have no choice - to keep from losing a good employee. Although the article is not addressing this exact scenario,
The Law of the Hog applies. But again, I am mindful that this employee started out on second shift and then decided she wanted first shift. I don't know why: child care problems? Was an effort made to switch with someone?
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