How about not hiring homosexuals who refuse to stop having homosexual sex? NOTE: they are not being denied employement for being "born homosexual", they are being denied employement for recreational sex practices which have a high likelihood for impacting health care.
How about employers who require all employees be sterilized in order to prevent any form of maternity leave? or pregnancy which increases health care costs? How about just saying ALL employees are not allowed to have sex, EVER.
Older employees have some "built-in" drawbacks. Why should they have to be employed?