Always look at the actual code and guidance:
11.3.4 Implementation Guidance
What does it mean?
Loose pieces of jewelry can fall into exposed food products and cause a choking hazard. Also, pathogenic bacteria can multiply in the warm, humid areas under watchbands, rings and bracelets. The application of the jewelry policy in food manufacturing is therefore dependent on the risk to the product and exposure to the product. In high risk processes, or those where product is exposed, company policies shall require the removal of all jewelry and loose objects prior to entering the processing areas.
What do I have to do?
Jewelry and other loose objects, including watches, worn or carried, must comply with local regulatory authority and proper employee hygiene practices. If such hand jewelry cannot be removed, it may be covered with material which can be maintained intact, in a clean and sanitary condition and which effectively protects against the contamination by these objects to the food, food-contact surfaces or food-packaging materials. Facilities can adjust their good employee hygiene pract based on customer requirements, risk to their product, product exposure and processing conditions.
I always ask them to be removed first, then if they claim it is not removale (which some are) they have to wear band aid over the object entire shift.