Necklace is acceptable.
And under SQF it is acceptable as well.
In general a medical necklace or bracelet is not considered jewelry.
The issue with the bracelet however is that it can become foreign contamination, cause a safety issue, etc.
We allow medical necklaces, but dis-allow the medical bracelets - we also require the employee to inform us if they are wearing a medical id necklace and they are required to be worn inside of garments.
All the Best,
All Rights Reserved,
Without Prejudice,
Glenn Oster.
Glenn Oster Consulting, LLC
Consultants for SQF, ISO-certified payment systems, Non-GMO, BRC, IFS, Lodging, F&B
http://www.GlennOster.com -- 774.563.6161