This reminds me of one of those knee jerk reactions to an activity where the reality is not 100% effective (there are hand washing violations in restaurants) to an activity which in theory would be 100% effective (appropriate glove usage would further protect from the spread of disease).
Issues like being less aware of your hand getting into blood or being in a hot kitchen and having to wear rubber gloves and what bacteria might fester under those gloves - none of that is addressed. Or the possibility that if rubber gloves are mandatory, then hand washing might decrease further - so then you'd have an even greater presence of norovirus on employees hands and thus possibly into the food. With all health perameters there's the "what we should do for optimal health (occupational, personal, etc)" - and what does happen. And this law is not taking into account what might happen with the gloves (that could be far worse/less healthy) in practice.