I imagine regulations are in place in any State or country where service animals are permitted in public places (I'm not sure what you mean by Oregon's 'very lenient policy'?) and these need to be adhered to by both owners/operators of businesses and those who own the animals.
In terms of the first scenario, it would be up to the business operator to address the employees' concerns, just as with any other workplace issues, however regulations can't be adjusted to suit individuals' requirements obviously.
So yes, they may need to find employment in an industry where dogs will not be present.
The second scenario again pertains to regulatory requirements; ours include the animal being clean, not defecating or urinating in inappropriate areas, not displaying aggressive behaviour and being under the control of the owner at all times.
So in this case, it appears that the librarian had no choice but to intervene and request the animals be removed.
Overall, my personal view is that where possible, people living with disabilities should be able to have access to the same places, activities etc. as the rest of our communities, something that is often taken for granted by the able-bodied, and minded
Say Anything Again
I heard we need a new one