Where I work we have to wear bump caps or hard hats in certain areas, Sikhs don't have to as they are exempt due to religious reasons, wonder what would happen if something heavy landed on their head, would it be classed as putting themselves at risk?
Nothing against Sikhs, most of them are good lads and pretty relaxed ,at least you can have a laugh with them.
I thought they could only wear the knife on special occasions, never seen many with them except at a wedding I went to, mind you you cannot use a knife where I work unless you have permission and are on the knife register, now that is foccing stupid health and safety.