I think you may have misinterpreted what I said. What I was saying was pertaining to the quote below specifically the underlined part is according to the sources below specifically the quote. If I have missed an exception to this rule then please excuse me, I do not have much knowledge about this.

What I am against here is the fact that only a Muslim may do it because it means in order to make Halal meat. This is unfair to people of all other religions and that are atheist/agnostic because they cannot be employed by slaughterhouses and hence this is discriminating against them as this is not a overtly religious job such as a priest or rabbi in which this would be acceptable.

For further example on why this is wrong lets take this out of context by blowing it out of proportion. Lets say the Jewish religion has very strict rules about where eating utensils came from. In fact, in order for it to be fit for consumption the person/persons that make it must be Jewish. This is discriminatory because now in order to sell to the rather large portion of the population that is Jewish, companies must employ Jews for this job exclusively to make the most money. That means everyone that is in that plant right now is fired for no reason. As well seeing how cows are essentially a raw product that is then "Refined" into different food dishes imagine if all that steel had to be mined by Jews. You have now made the entire steel mining industry that supplies The United Kingdom (Sticking with the actual country) which is based in everywhere from Canada, China, America, and itself fire all its employees because they have the "wrong" religion and replace them with Jews. If this was true there would be absolutely massive widespread outcry because it is a hundred billion dollar industry. However the reason people would be angry is because you have just discriminated against people because of their religious beliefs or lack there of. It is just because this would affect so many more people that this would be a larger issue but it is still wrong for the same reason, it is discrimination.

http://en.wikipedia.org/wiki/Halal_meat

Literally everything went wrong with the quotes in this, hopefully that is fixed now.