[jaclaz]

Cannot say what the parent wanted to convey, but that particular struck me too.

It is a basic safety rule in any envirnment where machines are present that you cannot wear any loose clothing, (like a scarf, or a hijab, but also wide pants or sleeves) nor jewelry (rings, bracelets, necklaces, etc.).

As a matter of fact later in the article, the journalist reported: >I am told to bring safety shoes, and instructed not to wear a hijab or jewelry.

In most factories AFAIK, besides such a "dress code" there is a responsible that checks that workers are dressed according to such safety rules.