Let's be clear here: no one is DENYING anything but money to anyone.  That is, no employer is denying anyone a job because they user bc.  Nope, all they're doing is refusing to pay for it.  And if the insurer wants to independently offer bc to employees apart from the employer, then it can do so.

Employer-provided insurance days have come and gone; the need to entice employees with goodies no longer exists as it did in the early part of the 20th century when there was a worker shortage.

Attacking religion and morality is what is dividing society; don't blame the religious,  Catholicism is 2000 years old.  Recreational sex, open homosexuality, gender-bending, etc... are all new, divisive perspectives, barely 60 years old, and only recently accepted by a significant portion of the population.