Hi Mr. Inc./ Riggio
This is a USA comment ex FARRP –
Precautionary labelling
Examples of precautionary labels. The term in brackets [ ] may differ depending on the food concerned.
"May contain [fish]"
"Manufactured in a facility that uses [egg] ingredients"
"Manufactured in a facility which processes [egg]"
"Processed in a facility that uses [milk]"
"Manufactured on equipment that processes products containing [peanuts]"
"Manufactured on equipment that uses [milk]"
"Manufactured in a facility that processes [tree nuts], but not on the same equipment"
"Manufactured on shared equipment…may contain [peanuts, tree nuts, wheat, soy, milk…]"
This is the type of labelling that uses terms such as 'may contain'. This type of labelling (also termed advisory labelling or defensive labelling) is strictly voluntary and not required by federal regulation. Consequently, situations when precautionary labelling may be used vary among food companies, as does the wording of the statements used (see Table for some examples but note this list is not exhaustive!!). FDA specifies that such labelling cannot be used as a substitute for good manufacturing practices such as allergen identification and control, cleaning of shared equipment, and segregation during processing. Some consumers believe manufacturers use precautionary labels as a way to protect themselves from legal action in case a food causes a reaction. This is not typically the case since this type of label should only be used by food manufacturers when there actually is a possibility (however small) that the food may contain an allergen which is not an ingredient but may be present as a result of the manufacturing process.
We know this type of labelling is not liked by consumers but currently it is the only way for food manufacturers to inform consumers if there is a possibility that an allergen which is not part of the final product may be present in the food. In the future, some restrictions may be placed on the use of precautionary labels but that is not yet the case.
https://farrp.unl.edu/FoodLabeling
The following comments are OT since not USA but possibly relate to the thought process being requested by the OP from a legal POV.
This is abstract of attachment below containing an analysis of liability issues as related to EC (voluntary) advisory/precautionary labelling –
This article answers two questions concerning the liability aspects of the use of “may contain” labelling on food packages, such as “This product may contain traces of nuts.” This type of voluntary labelling refers to the unintentional presence of an allergenic foodstuff, the inclusion of which can occur during the production process. Firstly, it is probable that courts consider a food product without a “may contain” warning defective under the Directive, even though this can create unintended consequences. This question is approached in terms of a defect both in design and in warning, since food manufacturers are able to reduce the risk by means of redesigning the production process or by providing a warning. With regard to the second liability question concerning the adequacy of “may contain” warnings, it is not likely that courts will consider the product warning defective in view of the difficulty of providing a better alternative.
May contain issues.pdf 303.19KB
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How, if at all, the logic used would transfer to a US legal system, no idea.