I found some articles about some of the incidents:
The nurse in the first instance won her case I believe. The other two were "uniform" issues. There seems to be disagreement because exceptions are made for "required" religious things like turbans, and then "optional" religious symbols like crosses.
I'm not sure what I think of that - technically, it's correct - OTOH - it seems a bit legalistic I guess. In the case of nurses, nuns have been nurses for ages wearing crosses without being strangled on a regular basis, and it seems over the top in a lot of nursing positions - I can totally see it in an ER, but not in a maternity ward you know? It seems so easy to make it work. When I was in the army, turbans, hijabs, etc were accommodated, as was long hair for natives, and anyone could wear a chain with a small religious symbol on it - even the nurses. In a dangerous situation those things could be changed (a Sikh who couldn't wear a gas mask in a situation where it might really be needed might have to shave for example) but they were pretty darn reasonable about identifying those.
I can see how people would feel they were living in a climate where they just had to keep their religion totally private.