| And often while it is discrimination, it is sometimes a employer looking out for his own interest.
If you owned a company and you could employ someone that you did not have to do anything for to allow them to work, but you instead chose someone that you have to make changes to the workplace, perhaps cause others to pick up some of the duties that are not the main job they are being hired for.
Lets say you are a smaller business and furnish health insurance, so a person with a disability will be automaticly covered by group insurance, but if thier disability is ongoing they will have additional bills and usage over that of other employees at times, so next year the cost to the company group insurance goes up.
There is a fear that customers may have a problem with someone that is in a wheel chair or with leg braces or that are "little people" and you are afraid such a choice will hurt your income
I am not defending but merely saying why it happens in some business | 
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