Protecting Conscience: Coming Back to Rob

I would put the burden on the employer to show that at the time of hiring, the employee had agreed to do what he/she now claims to be an unconscionable act of killing a human being. This admittedly is unfair to the employer where the employee make a wholly unforeseeable claim, e.g. that flowers are disguised children who should not be cut and put into a vase. But this sort of surprise will be rare, and anything else is like forcing the person with a conscience to wear a yellow star when looking for a job.