A well-knowN phenomena called "minority rule". Halal is a way to capture food production of a country. In Denmark since 2011, practically all of the chickens slaughtered were processed at facilities using halal slaughter methods. Not because the Danish government required halal meat, but largely because of economics and demand. Muslims who strictly follow halal dietary laws generally only eat halal meat. Non-Muslims, on the other hand, can typically eat either halal or non-halal meat. So from a business perspective, some manufacturers just make everything halal. You can serve both markets with one product. But here’s where it gets controversial - Halal certification standards require the person performing the slaughter to be Muslim. I believe they have to severe the animal's throat / blood vessels and invoke a prayer to Allah. So if nearly an entire industry adopts halal slaughter, doesn’t that effectively mean certain jobs become restricted to Muslims, regardless of how qualified a non-Muslim applicant might be? As such... Lead to indirect religious discrimination. Would people have to prefer non halal food in order to balance the demand? In Norway, an approved muslim only needs to be present to bless the meat, not do the slaughter themselves. This is the way that it is done in the US also.